https://youtu.be/2 Zi Ck 4H4D94\n\n The Intel&174; Xeon&174; E based TS-2483XU-RP enterprise NAS with up to 64 GB DDR4 ECC (Error Correcting Code) memory delivers server-grade performance with dependable reliability. It features Mellanox&174; Connect X&174;-4 Lx 10 Gb E controllers that not only fulfill bandwidth-demanding applications but also support i SER to offload CPU workloads with boosted virtualization performance, while PCIe expansion allows for installing graphics cards to empower video surveillance, virtualization & AI applications. The performance-driven TS-2483XU-RP provides you with advanced business-ready features, including software-defined SSD extra over-provisioning, software-defined networking & virtual switch, & much more.\n\n Intel&174; Xeon&174; E processor, extraordinary performance\n The TS-2483XU-RP features an Intel&174; Xeon&174; E-2136 six-core 3.3 GHz processor (burst up to 4.5 GHz), 16 GB DDR4 ECC memory (upgradable to 64 GB), & redundant power supply, delivering server-grade performance & dependable reliability for rugged enterprise IT environments as a cost-efficient NAS solution. Besides 4 Gigabit RJ45 LAN ports, the TS-2483XU-RP comes with two 10 Gb E SFP+ Smart NIC LAN ports to provide a significant performance boost.\n\n ECC memory forestalls data corruption to assure reliability\n The Intel&174; Xeon&174; E based TS-2483XU-RP uses ECC memory that can detect & correct single-bit memory errors as they occur to prevent downtime & data loss, which is essential for always-on, mission-critical, server-grade applications. The TS-2483XU-RP supports dual-channel DDR4 memory in four Long-DIMM slots. When using paired memory modules, the TS-2483XU-RP can leverage the power of dual-channel architecture to boost performance. You also customize the memory configuration (supports up to 64 GB RAM) of the TS-2483XU-RP for greater performance to tackle dynamically-changing workloads such as virtualization.\n\n Server-grade hardware: Sturdy & expandable\n The TS-2483XU-RP features outstanding hardware & expandable architecture, enabling optimum performance & flexibility to fulfill business needs in performance & application diversification.\n\n Dual 10 Gb E connectivity optimizes high-speed data transfer & VMware virtualization with i SER\n The TS-2483XU-RP provides two 10 Gb E SFP+ ports that use the Mellanox&174; Connect X&174;-4 Lx Smart NIC controller. They support the i SCSI Extensions for RDMA (i SER) protocol, allowing data to bypass general network drivers, the socket layer, & to directly enter memory buffers of the ESXi server & storage to offload CPU workloads. When both the VMware&174; server & the TS-2483XU-RP support i SER, it can provide up to 60% increased random read/write performance & 50% decreased latency, providing an essential tool to optimize demanding virtualization applications.\n\n Recommended usage of PCIe slots\n The TS-2483XU-RP provides multiple PCIe slots. To ensure that the SATA drives have sufficient bandwidth, it is recommended to only use low-end expansion cards, (such as a 1 Gb E NIC, USB (Universal Serial Bus) 3.0 card, or Wi-Fi adapter) with the PCIe Gen 2 slot (Slot 1, 3, 5) as this slot is connected to the PCH. For high-end expansion cards (including 10 Gb E/40 Gb E NICs, SAS cards, Mustang-200 acceleration card, & graphics cards), it is recommended to use PCIe Gen 3 slots (Slot 2, 4) as these slots are connected to the CPU.\n\n Abundant I/O capability with PCIe expansion\n The TS-2483XU-RP features 5 PCIe slots that allow for the usage of various expansion cards to expand application potential.\n\n Empower GPU-accelerated computing with graphics cards\n Graphics cards are optimized for graphical calculations & transformations. The TS-2483XU-RP provides PCIe slots for installing an AMD Radeon&132;&162; or NVIDIA&174; graphics card to boost data-intensive AI machine learning, while also providing benefits for imaging processing & virtual machine performance (via GPU passthrough).\n Note:\n 1. 3U/4U models support high-profile graphics cards that require external power; 1U/2U models support low-profile graphics cards that do not require additional external power (For example, the NVIDIA GT1030).\n 2. GPU support for QTS only applies to NVIDIA graphics cards. GPU Passthrough for VM is supported by AMD & NVIDIA graphics cards.\n 3. When Virtualization Station uses graphics cards, the NAS will temporarily stop hardware transcoding acceleration for QTS (and vice versa).\n 4. Always consult the Compatibility List for supported NAS & graphics cards before purchasing a graphics card for the NAS.\n\n SSD caching & auto tiering enable 24/7 optimized storage efficiency\n By enabling Qtier&132;&162; auto-tiering on the TS-2483XU-RP, organizations can just buy the amount of SSDs needed, & attain the highest value/performance & optimal storage efficiency for data storage & sharing.\n\n Improve random data access speeds with an SSD cache\n SSD caches accelerate IOPS performance & reduce latency for storage volumes. They are perfect for IOPS-demanding applications (including databases & virtualization) & can significantly improve overall workflows. The TS-2483XU-RP also supports write-only SSD caches to greatly boost write-intensive applications & also RAID 5/6 SSD caches for higher performance & caching space.\n\n Maximize the value of SSDs with Qtier Technology\n Qtier&132;&162; Technology empowers the TS-2483XU-RP with auto tiering that helps continuously optimize storage efficiency by automatically moving data between 2.5-inch SSDs & high-capacity HDDs based on the data's access frequency. Qtier&132;&162; 2.0 features IO-awareness that empowers SSD-tiered storage with a cache-like reserved space to handle burst I/O in real time, greatly maximizing the advantages of SSDs.\n\n Attain enterprise-grade SSD performance levels from affordable consumer SSDs\n The TS-2483XU-RP supports software-defined SSD extra over-provisioning (OP) that means that you can allocate additional OP space (from 1% to 60%) to optimize random write speeds & to extend SSD lifespan. Now you can use affordable consumer SSDs for the TS-2483XU-RP, adjust the SSD OP, & potentially attain performance & endurance levels similar to enterprise-grade SSDs to enjoy faster file backups, smoother multimedia experiences, & optimized virtualization applications.\n\n Up to 128 monitoring channels in QVR Pro for well-rounded security surveillance\n The TS-2483XU-RP supports QVR Pro surveillance solution with 8 license-free channels for surveillance monitoring, which can be expanded up to 128 channels* with additional channel license purchase for a more extensive security deployment. QVR Pro supports over 5, 000 IP cameras, including all of the standard fisheye cameras available on the market. There are more advanced features for fully unleashing the potential of fisheye cameras: allowing a single fisheye camera&153;s image to be simultaneously viewed in nine channels from different angles, & cross-platform hardware-accelerated decoding for fisheye camera images. QVR Pro ensures higher surveillance performance for greater security while providing deployment flexibility & budget-savings.\n* The maximum number of channels supported varies by NAS model, network configuration, & camera settings. \n\n Flexibly allocate physical & virtual network resources to simplify network deployment\n The Network & Virtual Switch application means that you can leverage limited physical network resources for unlimited virtual applications & centrally manage the entire network structure with a brilliantly-visualized network topology map. Flexible manageability enables you to reorganize physical & virtual network connections with greater ease, so you can allocate adequate network resources to the TS-2483XU-RP, virtual machines & containers whenever needed. The network deployment is greatly simplified while your network management efficiency is greatly enhanced.\n\n Complete backup planning\n The TS-2483XU-RP provides a reliable, flexible backup & disaster recovery solution to assist organizations in routine backup jobs with cost-efficiency & high productivity.\n\n Block-based i SCSI LUN: Ideal choice for virtualization storage\n The TS-2483XU-RP supports block-based i SCSI LUN that provides a more reliable & isolated environment than file-based LUN. Supporting VMware&174;, Citrix&174;, Microsoft&174; Hyper-V&174; & Windows Server&174; 2016, the TS-2483XU-RP provides a high-performance, reliable & affordable storage solution for virtualization environments, while also supporting VMware VAAI & Microsoft ODX to increase performance by offloading server loading for ESXi server & Hyper-V respectively, & supporting QNAP v Sphere Client plug-in & QNAP SMI-S provider with enhanced operational efficiency & management in virtualization applications.\n\n Complete control over system status & data security\n In open network environments, data on connected devices may be exposed in a potential hack. The TS-2483XU-RP provides numerous security options, such as encrypted access, IP blocking, 2-step verification, & more. Administrators can also control the access rights of each user to different folders, & use the following tools to enhance security management.\n\n Flexible & economical storage expansion\n QNAP provides several ways to expand your NAS storage as needed to accommodate data & business growth.\n\n\n\n\n\n\n\n Model: TS-2483XU-RP\n\n\n\n\n\n\n\n ...

The Intel&174; Xeon&174; E based TS-2483XU-RP enterprise NAS with up to 64 GB DDR4 ECC (Error Correcting Code) memory delivers server-grade performance with dependable reliability. It features Mellanox&174; Connect X&174;-4 Lx 10 Gb E controllers that not only fulfill bandwidth-demanding applications but also support i SER to offload CPU workloads with boosted virtualization performance, while PCIe expansion allows for installing graphics cards to empower video surveillance, virtualization & AI applications. The performance-driven TS-2483XU-RP provides you with advanced business-ready features, including software-defined SSD extra over-provisioning, software-defined networking & virtual switch, & much more.\n\n Intel&174; Xeon&174; E processor, extraordinary performance\n The TS-2483XU-RP features an Intel&174; Xeon&174; E-2136 six-core 3.3 GHz processor (burst up to 4.5 GHz), 16 GB DDR4 ECC memory (upgradable to 64 GB), & redundant power supply, delivering server-grade performance & dependable reliability for rugged enterprise IT environments as a cost-efficient NAS solution. Besides 4 Gigabit RJ45 LAN ports, the TS-2483XU-RP comes with two 10 Gb E SFP+ Smart NIC LAN ports to provide a significant performance boost.\n\n ECC memory forestalls data corruption to assure reliability\n The Intel&174; Xeon&174; E based TS-2483XU-RP uses ECC memory that can detect & correct single-bit memory errors as they occur to prevent downtime & data loss, which is essential for always-on, mission-critical, server-grade applications. The TS-2483XU-RP supports dual-channel DDR4 memory in four Long-DIMM slots. When using paired memory modules, the TS-2483XU-RP can leverage the power of dual-channel architecture to boost performance. You also customize the memory configuration (supports up to 64 GB RAM) of the TS-2483XU-RP for greater performance to tackle dynamically-changing workloads such as virtualization.\n\n Server-grade hardware: Sturdy & expandable\n The TS-2483XU-RP features outstanding hardware & expandable architecture, enabling optimum performance & flexibility to fulfill business needs in performance & application diversification.\n\n Dual 10 Gb E connectivity optimizes high-speed data transfer & VMware virtualization with i SER\n The TS-2483XU-RP provides two 10 Gb E SFP+ ports that use the Mellanox&174; Connect X&174;-4 Lx Smart NIC controller. They support the i SCSI Extensions for RDMA (i SER) protocol, allowing data to bypass general network drivers, the socket layer, & to directly enter memory buffers of the ESXi server & storage to offload CPU workloads. When both the VMware&174; server & the TS-2483XU-RP support i SER, it can provide up to 60% increased random read/write performance & 50% decreased latency, providing an essential tool to optimize demanding virtualization applications.\n\n Recommended usage of PCIe slots\n The TS-2483XU-RP provides multiple PCIe slots. To ensure that the SATA drives have sufficient bandwidth, it is recommended to only use low-end expansion cards, (such as a 1 Gb E NIC, USB (Universal Serial Bus) 3.0 card, or Wi-Fi adapter) with the PCIe Gen 2 slot (Slot 1, 3, 5) as this slot is connected to the PCH. For high-end expansion cards (including 10 Gb E/40 Gb E NICs, SAS cards, Mustang-200 acceleration card, & graphics cards), it is recommended to use PCIe Gen 3 slots (Slot 2, 4) as these slots are connected to the CPU.\n\n Abundant I/O capability with PCIe expansion\n The TS-2483XU-RP features 5 PCIe slots that allow for the usage of various expansion cards to expand application potential.\n\n Empower GPU-accelerated computing with graphics cards\n Graphics cards are optimized for graphical calculations & transformations. The TS-2483XU-RP provides PCIe slots for installing an AMD Radeon&132;&162; or NVIDIA&174; graphics card to boost data-intensive AI machine learning, while also providing benefits for imaging processing & virtual machine performance (via GPU passthrough).\n Note:\n 1. 3U/4U models support high-profile graphics cards that require external power; 1U/2U models support low-profile graphics cards that do not require additional external power (For example, the NVIDIA GT1030).\n 2. GPU support for QTS only applies to NVIDIA graphics cards. GPU Passthrough for VM is supported by AMD & NVIDIA graphics cards.\n 3. When Virtualization Station uses graphics cards, the NAS will temporarily stop hardware transcoding acceleration for QTS (and vice versa).\n 4. Always consult the Compatibility List for supported NAS & graphics cards before purchasing a graphics card for the NAS.\n\n SSD caching & auto tiering enable 24/7 optimized storage efficiency\n By enabling Qtier&132;&162; auto-tiering on the TS-2483XU-RP, organizations can just buy the amount of SSDs needed, & attain the highest value/performance & optimal storage efficiency for data storage & sharing.\n\n Improve random data access speeds with an SSD cache\n SSD caches accelerate IOPS performance & reduce latency for storage volumes. They are perfect for IOPS-demanding applications (including databases & virtualization) & can significantly improve overall workflows. The TS-2483XU-RP also supports write-only SSD caches to greatly boost write-intensive applications & also RAID 5/6 SSD caches for higher performance & caching space.\n\n Maximize the value of SSDs with Qtier Technology\n Qtier&132;&162; Technology empowers the TS-2483XU-RP with auto tiering that helps continuously optimize storage efficiency by automatically moving data between 2.5-inch SSDs & high-capacity HDDs based on the data's access frequency. Qtier&132;&162; 2.0 features IO-awareness that empowers SSD-tiered storage with a cache-like reserved space to handle burst I/O in real time, greatly maximizing the advantages of SSDs.\n\n Attain enterprise-grade SSD performance levels from affordable consumer SSDs\n The TS-2483XU-RP supports software-defined SSD extra over-provisioning (OP) that means that you can allocate additional OP space (from 1% to 60%) to optimize random write speeds & to extend SSD lifespan. Now you can use affordable consumer SSDs for the TS-2483XU-RP, adjust the SSD OP, & potentially attain performance & endurance levels similar to enterprise-grade SSDs to enjoy faster file backups, smoother multimedia experiences, & optimized virtualization applications.\n\n Up to 128 monitoring channels in QVR Pro for well-rounded security surveillance\n The TS-2483XU-RP supports QVR Pro surveillance solution with 8 license-free channels for surveillance monitoring, which can be expanded up to 128 channels* with additional channel license purchase for a more extensive security deployment. QVR Pro supports over 5, 000 IP cameras, including all of the standard fisheye cameras available on the market. There are more advanced features for fully unleashing the potential of fisheye cameras: allowing a single fisheye camera&153;s image to be simultaneously viewed in nine channels from different angles, & cross-platform hardware-accelerated decoding for fisheye camera images. QVR Pro ensures higher surveillance performance for greater security while providing deployment flexibility & budget-savings.\n* The maximum number of channels supported varies by NAS model, network configuration, & camera settings. \n\n Flexibly allocate physical & virtual network resources to simplify network deployment\n The Network & Virtual Switch application means that you can leverage limited physical network resources for unlimited virtual applications & centrally manage the entire network structure with a brilliantly-visualized network topology map. Flexible manageability enables you to reorganize physical & virtual network connections with greater ease, so you can allocate adequate network resources to the TS-2483XU-RP, virtual machines & containers whenever needed. The network deployment is greatly simplified while your network management efficiency is greatly enhanced.\n\n Complete backup planning\n The TS-2483XU-RP provides a reliable, flexible backup & disaster recovery solution to assist organizations in routine backup jobs with cost-efficiency & high productivity.\n\n Block-based i SCSI LUN: Ideal choice for virtualization storage\n The TS-2483XU-RP supports block-based i SCSI LUN that provides a more reliable & isolated environment than file-based LUN. Supporting VMware&174;, Citrix&174;, Microsoft&174; Hyper-V&174; & Windows Server&174; 2016, the TS-2483XU-RP provides a high-performance, reliable & affordable storage solution for virtualization environments, while also supporting VMware VAAI & Microsoft ODX to increase performance by offloading server loading for ESXi server & Hyper-V respectively, & supporting QNAP v Sphere Client plug-in & QNAP SMI-S provider with enhanced operational efficiency & management in virtualization applications.\n\n Complete control over system status & data security\n In open network environments, data on connected devices may be exposed in a potential hack. The TS-2483XU-RP provides numerous security options, such as encrypted access, IP blocking, 2-step verification, & more. Administrators can also control the access rights of each user to different folders, & use the following tools to enhance security management.\n\n Flexible & economical storage expansion\n QNAP provides several ways to expand your NAS storage as needed to accommodate data & business growth.\n\n- DDR4 ECC memory detects & then corrects single-bit memory errors, demonstrating high reliability for crucial applications\n- Two 10 Gb E SFP+ Smart NIC ports with i SER support accelerate large file sharing, intensive data transfer, & VMware virtualization applications\n- PCIe expandability allows for graphics cards or 40 Gb E/ 25 Gb E/ 10 Gb E adapters to increase application performance\n- Supports VMware&174;, Citrix&174;, Microsoft&174; Hyper-V&174; & Windows Server&174; 2016 virtualization with reliability & cost-efficiency\n- Software-defined SSD extra over-provisioning combats write amplification & optimizes SSD random write speeds for IOPS-demanding applications\n- Comprehensive security management, providing a security portal for your NAS & helping you to stay informed of NAS status at all times Feature Feature Value Storage drives installed Y Installed storage drive type HDDSupported storage drive types HDD, SSDNumber of storage drives supported 24RAID support Y Hot-swap drive bays Y Supported storage drive interfaces Serial ATA IIIStorage drive sizes supported 2.5, 3.5"RAID levels 0, 1, 5, 6, 10, 50, 60, JBODOnline RAID migration Y Online RAID expansion YRAID rebuild Y Supported file systems FAT32, HFS+, NTFS, ext 3, ext 4 Bad block scan Y Processor frequency 3.3 GHz Internal memory type DDR4 Maximum RAM supported 64 GBMemory slots 4 Flash memory 4000 MBEthernet LANYWi-Fi N Ethernet LAN data rates 10, 100, 1000, 10000 Mbit/s Ethernet LAN data rate supported (max)10000 Mbit/s DHCP client YDHCP server Y Jumbo frames support Yi SCSI support Y Supported network protocols TCP/IP, IPv 4, IPv 6 Dynamic DNS (DDNS)YWLAN adapter supported Y Ethernet LAN (RJ-45) ports 4USB port Y Fiber ports quantity 2USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity 4USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity 2 Fiber optic connector SFP+PCI Express x 4 (Gen 3.x) slots 2PCI Express x 8 (Gen 3.x) slots 1 Chassis type Rack (4U) Cooling type Active Product colour Black Number of fans 4 fan (s) Fan diameter 9.2 cm LED indicators HDD, LAN, Status Cable lock slot Y Cable lock slot type Kensington Type NASDevice class Large Enterprise Business Backup function Y Backup features Cloud, i SCSI LUNMultilingual support Y Noise level 28.7 d B Security algorithms 256-bit AES, FIPS 140-2, HTTPS, SNMPv 3, SSH, SSL/TLSAccess Control List (ACL)YWeb-based management Y Reset button Y On/off switch Y Built-in i Tunes server Y Built-in FTP server Y Browser supported Apple Safari 7+, Google Chrome, Microsoft Internet Explorer 10+, Mozilla Firefox System log Y Hot spare YS.M.A.R.T. support Y Share folder CIFS/SMBUniversal Plug & Play (UPn P)YOperating system version 4.3.5 Windows operating systems supported Windows 10, Windows 7, Windows 8 Linux operating systems supported Y Mac operating systems supported Mac OS X 10.10 Yosemite, Mac OS X 10.11 El Capitan, Mac OS X 10.12 Sierra, Mac OS X 10.13 High Sierra, Mac OS X 10.14 Mojave, Mac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion, Mac OS X 10.9 Mavericks Server operating systems supported Windows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016 Power supply location Built-in Power supply unit (PSU) capacity 800 WNumber of power supply units 2AC input voltage 100
- 240 VFan voltage 12 VWidth 481 mm Depth 672 mm Height 176.2 mm Cables included AC, LAN (RJ-45) Quick installation guide Y Number of screws 192
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Datasheet: http://store.cmsdistribution.com/product-files/datasheet/255448.pdf\n\n Warranty: 24 Months ...

Datasheet: http://store.cmsdistribution.com/product-files/datasheet/255448.pdf\n\n Warranty: 24 Months ...

Facing the increasing demand for data storage, sharing & multimedia processing, more & more users are looking for a NAS system with good performance & an affordable price tag. The Intel&174; quad-core TS-251+ provides an uncompromising high-performance scalable storage solution for professional users. Powered by the intelligent QTS 4.2 operating system, the TS-251+ performs as an easy-to-use yet powerful NAS for data backup, file synchronization & sharing, remote access & multimedia applications, & is ideal for users to create a secure private cloud to access their data easily.\n Centralize your file storage, sharing & backup with excellent performance\n Run multiple Windows&174;, Linux&174;, UNIX&174; & Android&132;&162; based virtual machines with the Virtualization Station\n Operate multiple isolated Linux&174; systems as well as download containerized apps with Container Station\n Play 1080p videos with the bundled remote control & multi-channel audio pass-through via HDMI\n Transcode Full HD videos on-the-fly or offline\n Stream multimedia files via DLNA&174;, Air Play&174;, Chromecast&132;&162; & Bluetooth&174; with multi-zone multimedia control\n Quickly find specific files by real-time, natural search with Qsirch\n Scale up to 10 drives with QNAP UX-800P expansion enclosure\n \n Quad-core 64-bit Intel&174; Celeron&174; CPU for exceptional performance\n \n The TS-251+ is powered by a 64-bit Intel&174; Celeron&174; quad-core 2.0 G Hz processor & has 2GB/8GB energy-efficient DDR3L RAM (upgradable to 8GB) & dual Gigabit LAN ports, delivering up to 225 MB/s read & write speeds with port trunking mode. The TS-251+ can also automatically increase the processor's clock rate from 2.0 G Hz to 2.42 G Hz when needed for CPU-intensive tasks. The TS-251+ supports AES 256-bit volume & folder encryption with transfer speeds of up to 205 MB/s, boosting system performance & security while ensuring the safety of sensitive personal data stored in the TS-251+.\n \n QTS 4.2
- Simple & efficient\n \n Thanks to the intuitive user interface of QTS 4.2, your NAS experience is smarter, smoother & spectacular. Its modern flat design streamlines loading times, & the intelligent desktop means that you can quickly find desired functions, create desktop shortcuts or group shortcuts, monitor important system information on a real-time basis, & open multiple application windows to run multiple tasks concurrently, bringing greater operating efficiency. QTS breaks the barriers of devices, platforms & geography to bring optimized cloud experiences to you, & incorporates more advanced features including volume/LUN snapshot, remote connection to public cloud services in File Station, multi-zone multimedia system, & more.\n \n Run additional operating systems on the TS-251+\n \n The Virtualization Station transforms the TS-251+ into a 2-in-a-box NAS that can function as an all-in-one NAS & a virtualization platform that supports multiple operating systems, fast VM creation, VM backup & restoration, VM import/export, snapshot, Device Management for centrally managing VM, & enables desktop operations on web browsers. With the easy-to-use interface, you can centrally manage all of the VMs created on the TS-251+ with minimal effort. You can also download VMs on demand from online VM markets & import them to the TS-251+ without any complex procedures.\n \n Container Station " LXC & Docker&174; Containers inclusive\n \n QNAP Container Station exclusively integrates LXC & Docker&174; lightweight virtualization technologies, allowing you to operate multiple isolated Linux&174; systems on the TS-251+ as well as download apps from the built-in Docker Hub&174; Registry. It supports container import/export & permission settings, & features an informative dashboard & flexible user interface for you to manage multiple containers. You can experience the amazing Container Station & enjoy the playground of virtual containers with the TS-251+. Container Station also supports Online Document app, which means that you can directly view, edit & store files of various types anytime on your NAS, including Office documents, images & text files.\n \n Use your TS-251+ as a PC with Qv PC Technology\n \n QNAP's exclusive Qv PC Technology consolidates a number of high-end technologies including VM integration, multimedia transcoding, HDMI output, cloud integration & NAS connection technologies, allowing users to operate the TS-251+ as a PC when they plug in a keyboard, mouse & HDMI monitor. With Qv PC Technology, the TS-251+ is transformed into a cost-effective device with PC functionalities for users to directly access stored data, run multiple applications using Windows&174;/ Linux&174;/UNIX&174;/ Android&132;&162; based VMs, surf the web, enjoy Full HD videos with Kodi&132;&162;, monitor surveillance live feeds from IP cameras in real time, & much more.\n \n Enjoy videos on TV via HDMI with bundled remote control\n \n QNAP HD Station integrates the powerful Kodi&132;&162; media player & web browser. With HDMI connectivity, you can connect the TS-251+ to a HDTV to watch your rich multimedia content on the big screen. The splendid user interface & support for 7.1-channel audio passthrough bring smooth playback of 1080p videos. You can even watch You Tube&132;&162; videos, surf the web & manage the TS-251+ using Google Chrome&132;&162; or Mozilla Firefox&174; with multilingual keyboard input. HD Station supports multi-tasking & user authentication so only authorized users can access the stored data via HDMI monitors.\n \n The TS-251+ is packed with the QNAP RM-IR002 remote control for you to conveniently control HD Station via the built-in IR receiver. You can also turn your mobile devices into remote controls by installing the Qremote app. HD Station also supports You Tube Pairing, allowing you to select a You Tube&132;&162; video on your smartphone, tablet or computer & play it on your HDTV via the TS-251+.\n \n Real-time & offline video transcoding\n \n The TS-251+ delivers superior real-time Full HD video transcoding to convert your videos to formats that can be smoothly played on PCs, mobile devices & Smart TVs. It allows for multiple devices to simultaneously view different videos stored on the TS-251+ with on-the-fly hardware accelerated transcoding, saving your time in converting videos to different formats for different devices.\n \n With the benefits of offline transcoding, if you can only connect to an Internet connection with limited/restricted bandwidth, you can still enjoy smooth videos via File Station, Video Station, or the Qfile app by selecting a pre-rendered lower-resolution video, saving system resources of the TS-251+ for other applications. The TS-251+ also means that you can set a dedicated folder for automatic video transcoding.\n \n Enjoy media freely with multi-zone multimedia control\n \n Use your TS-251+ as a multi-zone multimedia system to fill every corner of your house with your choice of media. You can centrally manage & stream photos, music & videos from the TS-251+ to different rooms from a single device using Bluetooth&174;& USB (Universal Serial Bus) devices connected to the TS-251+ (for music streaming only), HDMI, DLNA&174;, Apple TV&174; & Chromecast&132;&162;. Every room member in different zones can enjoy the convenience & simplicity for media playback & multimedia storage.\n \n Alternatively, to enjoy multimedia yourself, you can choose DLNA-compatible devices, use the Qfile app on an i OS&174; device to browse videos/photos & play on the TV via Apple TV&174;, or transform the TS-251+ into a powerful streaming machine with DLNA&174;, Roku&174;, Amazon&174; Fire TV, & Google TV&132;&162; support with the support of Plex Media Server.\n \n Qsirch " A smarter, faster way to search\n \n Quickly & easily find documents, photos, videos, & music with Qsirch, QNAP's new built-in NAS search application lets you find what you need by real-time, natural search. Simply type in as much as you know about what you are trying to find, including parts of the file name or even words/phrases in the document, & Qsirch will display a list of matches, complete with thumbnails, as you type. Qsirch even remembers your search history so you can quickly navigate to files you've previously searched for. Qsirch is a huge productivity boost that greatly reduces the amount of time spent looking for files on the NAS so you can focus on other tasks.\n \n Cross-platform file sharing, centralized data storage\n \n The TS-251+ supports SMB/CIFS, NFS, & AFP protocols for file sharing across Windows&174;, Mac&174; & Linux&174;/UNIX&174;. Data, logs & ISO image of CDs & DVDs can be centrally stored in the TS-251+ & protected by an integrated antivirus solution.\n \n File Station integrated with cloud services\n \n The web-based File Station enables you to easily upload, download, & manage files on your TS-251+ wherever there is an internet connection. Supporting file extraction, folder creation, & smart search for files & folders, the File Station also means that you can easily share files with colleagues & friends via unique URLs, email, & a shared space. What's even better, you can also directly browse & transfer files between the TS-251+ & public cloud services like Google Drive&132;&162;, Dropbox&174;, Microsoft&174; One Drive, Box&174;, Yandex&174; Disk & Amazon&174; Cloud Drive through File Station, & view files with Office Online & Google Docs&132;&162; or directly open them with a Google Chrome&132;&162; office extension.\n \n Well-rounded backup solutions to secure data\n \n QNAP Net Bak Replicator supports real-time & scheduled data backup on Windows including Outlook email archiving. Apple Time Machine&174; is also supported to provide Mac&174; OS X users with a solution to effortlessly back up data to the TS-251+. The front panel USB (Universal Serial Bus) 3.0 port on the TS-251+ features a one-touch-copy function for you to instantly back up data on external drives to the TS-251+ with just one click, or alternatively to back up data from the TS-251+ to external drives. A wide range of third-party backup software such as Acronis&174; True Image & Symantec&174; Backup Exec are also supported.\n \n Disaster recovery solutions bring peace of mind\n \n The TS-251+ offers various data recovery options. RTRR (Real-Time Remote Replication) supports real time & scheduled data backup to remote QNAP NAS or FTP servers & synchronizes files to remote folders from local folders with better backup efficiency. You can enjoy backup versioning to preserve a certain amount of versions, with options of simple versioning to schedule how many versions should be retained & for how long, or smart versioning with a rotation scheme that automatically replaces earlier backup versions. The TS-251+ also supports rsync protocol to back up data to remote servers on a scheduled basis. Data can also be backed up to & restored from a range of cloud storage services, including Amazon&174; S3, Amazon&174; Glacier, Microsoft&174; Azure&132;&162;, Elephant Drive&174;, Dropbox&174;, Google Drive&132;&162;, Google Cloud Storage&132;&162;, & more.\n \n Volume & LUN snapshot simplifies restoration\n \n Not limited to high-end models, the TS-251+ brings the highly-anticipated snapshot function for your flexible usage.QTS Storage Manager adds an easy-to-use web-based snapshot tool for you to easily back up & restore data on the TS-251+ back to any point of time to prevent loss of important data. You can take up to 256 snapshots per volume or LUN, efficiently replicate volume/LUN snapshots to remote servers by copying only the changes made, & quickly clone a volume /LUN snapshot as a local volume without interrupting the current system operation. You can even set up the system to automatically take a snapshot of the volume before backup via RTRR/rsync, even when the file is opened.\n \n Comprehensive security options\n \n In open network environments, data on the connected devices may be exposed in a potential hack. The TS-251+ provides numerous security options, such as 2-step verification, encrypted access, IP blocking, & more. Administrators can also control the access rights of each user to different folders, preventing unauthorized access to important files. The TS-251+ is validated with military-level FIPS 140-2 AES 256-bit encryption, preventing sensitive data from unauthorized access & breach even if the hard drives or the entire system were stolen.\n \n Secure access with VPN Server & VPN Client\n \n The TS-251+ can be a VPN server with L2TP/IPsec, Open VPN, & PPTP support, allowing you to securely access data shared within the private local network. The TS-251+ also supports VPN Client for PPTP & Open VPN to protect your privacy during data transmission.\n \n File synchronization across devices & clouds\n \n Qsync utility turns your TS-251+ into a safe, large-capacity data center for file synchronization. Any file uploaded to the TS-251+ will be made available for all linked devices, such as computers, laptops or mobile devices. Qsync is especially useful for frequent travelers to manage files & always have the most up-to-date files on different devices. Qsync provides multiple ways of file synchronization & group file sharing, greatly enhancing the flexibility of team projects & collaboration. It also supports centralized configuration, & means that you can remotely erase the Qsync folder on a lost device to avoid data breaches, & even restore it after you have retrieved the device. You can also install the Cloud Drive Sync app from QTS App Center to easily sync files with Google Drive&132;&162; & Dropbox&174; cloud storage.\n \n Comprehensive surveillance solution providing 24/7 security\n \n The TS-251+'s Surveillance Station offers a professional surveillance solution with a user-friendly management interface, a wide range of over 3, 000 compatible IP camera models, & expandable IP camera channel licenses. It supports real-time monitoring, video & audio recording & playback with a wide range of customizable settings. You can also install the Vmobile app on your i OS&174; or Android&132;&162; devices to manage the monitoring of cameras anytime, anywhere, to safeguard your office environment, or install the Vcam mobile app to turn your device into a network camera to instantly record to your TS-251+. The TS-251+ offers 2 free IP camera channels & you can expand up to 40 channels by purchasing additional licenses.\n \n Access & enjoy with your mobile devices\n \n The TS-251+ is your private cloud storage that virtually enlarges the capacity of your smart mobile devices. Qfile means that you can access, upload, download, manage, & share stored files easily as if you are carrying tons of files in your pocket. If Qfile is installed on an i OS&174; device, users can also browse videos & photos stored on the TS-251+ & play on a TV via Apple&174; TV. Qmanager lets you monitor & manage the TS-251+ remotely & efficiently without turning on your PC. You can take & share digital notes with Qnotes, & enjoy & share music, photos & videos on the TS-251+ anywhere & anytime with Qmusic, Qphoto & Qvideo apps.\n \n Install-on-demand apps to extend NAS functionality\n \n The TS-251+ has a built-in App Center that provides various install-on-demand apps developed by QNAP & third-party developers, including tools for backup/sync, business, content management, communications, download, entertainment, & much more. It is also a centralized location for managing & updating installed apps. In addition, QNAP's development platform embraces the open-source spirit to enable developers to create their own apps, adding potentially limitless potential for the TS-251+.\n \n Expand storage capacity easily\n \n The TS-251+ supports online capacity expansion for archiving rapidly growing data by connecting a QNAP expansion enclosure. With the QNAP scale-up solution, the raw storage capacity can be expanded on dem&, making the TS-251+ an ideal file center with large storage capacity for storage-intensive business applications.\n \n With the support of QJBOD Express (JBOD enclosures roaming), you can just connect a large capacity QNAP expansion enclosure to the TS-251+, & migrate data to another NAS through the JBOD enclosure without network connectivity.\n \n Energy-saving & eco-friendly\n \n The TS-251+ utilizes a 22nm CPU & DDR3L RAM which feature low voltage, low power consumption, maintaining high performance in system operations with the benefit of energy-saving. Other eco-friendly designs include S3 sleep mode, HDD standby, scheduled power on/off, hard disk standby mode, & Wake on LAN. QNAP also packs the TS-251+ in an eco-friendly box to minimize the environmental impact.\n \n Easy-to-use NAS management tools\n The TS-251+ provides comprehensive system tools to increase management efficiency.\n
- Administrators can turn on the Turbo NAS via LAN to save energy & improve security.\n
- The Turbo NAS supports Syslog server that collects logs from various connected devices over the Internet & saves the data, enabling centralized log management with greater efficiency.\n \n Additional features\n The TS-251+ supports various applications for home offices as an all-in-one Turbo NAS with cost-efficiency.\n \n
- The Turbo NAS supports RADIUS server which provides centralized authorization management for computers to connect & use a network service.\n
- QTS also supports VPN Client for PPTP & Open VPN to protect your privacy during data transmission.\n \n
- Centralize your file storage, sharing & backup with excellent performance\n
- Run multiple Windows&174;, Linux&174;, UNIX&174; & Android&132;&162; based virtual machines with the Virtualization Station\n
- Operate multiple isolated Linux&174; systems as well as download containerized apps with Container Station\n
- Enjoy the best audio-visual experience with HDMI output & the free remote control\n
- Transcode Full HD videos on-the-fly or offline*\n
- Stream multimedia files via DLNA&174;, Air Play&174;, Chromecast&132;&162; & Bluetooth&174; with multi-zone multimedia control\n
- Quickly find specific files by real-time, natural search with Qsirch\n
- Scale up to 10 drives with QNAP UX-800P expansion enclosure\n\n class="generic"> Storage Total installed storage capacity 28 TBStorage drives installed Yes Installed storage drive type HDDNumber of storage drives installed 2 Supported storage drive types HDD, SSDNumber of storage drives supported 2 Storage drive interface Serial ATA IIIStorage drive capacity 14000 GBHot-swap drive bays Yes RAID support Yes Supported file systems FAT32, HFS+, NTFS, ext 3, ext 4RAID levels 0, 1, JBODSupported storage drive interfaces Serial ATA, Serial ATA II, Serial ATA IIIStorage drive sizes supported 2.5, 3.5 Processor Processor boost frequency 2.42 GHz Processor frequency 2 GHz Processor family Intel&174; Celeron&174; Processor cores 4 Memory Internal memory type DDR3 L Internal memory 2 GBMaximum RAM supported 8 GBMemory slots 2 Flash memory 512 MBNetworking Dynamic DNS (DDNS) Yes Ethernet LANYes Ethernet LAN data rates 10, 100, 1000 Mbit/s Wi-Fi No Wake-on-LAN ready Yes Supported network protocols CIFS/SMB, AFP (v 3.3), NFS (v 3), FTP, FTPS, SFTP, TFTP, HTTP (S), Telnet, SSH, i SCSI, SNMP, SMTP, SMSCJumbo frames support Yesi SCSI support Yes DHCP server Yes DHCP client Yes WLAN adapter supported Yes Ports & interfaces USB port Yes USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity 2USB 2.0 ports quantity 2HDMI ports quantity 1 Ethernet LAN (RJ-45) ports 2 Hard drive RAID support Yes Supported file systems FAT32, HFS+, NTFS, ext 3, ext 4RAID levels 0, 1, JBODDesign Cooling type Active Fan diameter 7 cm Cable lock slot type Kensington Product colour Black Number of fans 1 fan (s)LED indicators Yes Chassis type Desktop Cable lock slot Yes Technical details Type NASDevice class Home & Home Office Backup function Yes Backup features Cloud, i SCSI LUNProduct colour Black Multilingual support Yes LED indicators Yes Chassis type Desktop Buzzer Yes Number of fans 1 fan (s) Performance Built-in i Tunes server Yes Built-in FTP server Yes System log Yes Share folder CIFS/SMBS.M.A.R.T. support Yes Hot spare Yes Browser supported Chrome, Firefox, Internet Explorer 10+, Safari 7+ Type NASDevice class Home & Home Office Backup function Yes Backup features Cloud, i SCSI LUNOn/off switch Yes Windows operating systems supported Windows 10, Windows 7, Windows 8, Windows 8.1 Server operating systems supported Windows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016 Mac operating systems supported Mac OS X 10.10 Yosemite, Mac OS X 10.11 El Capitan, Mac OS X 10.12 Sierra, Mac OS X 10.13 High Sierra, Mac OS X 10.14 Mojave Linux operating systems supported Yes Web-based management Yes Security algorithms 256-bit AES, FIPS 140-2, HTTPS, SSH, SSL/TLSReset button Yes Operating system version 4.2 Operating system installed QNAP Turbo System Multilingual support Yes Buzzer Yes Access Control List (ACL) Yes Cooling Cooling type Active Fan diameter 7 cm Fan voltage 12 VNumber of fans 1 fan (s) Security Cable lock slot type Kensington Security algorithms 256-bit AES, FIPS 140-2, HTTPS, SSH, SSL/TLSCable lock slot Yes Access Control List (ACL) Yes Software Windows operating systems supported Windows 10, Windows 7, Windows 8, Windows 8.1 Server operating systems supported Windows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016 Mac operating systems supported Mac OS X 10.10 Yosemite, Mac OS X 10.11 El Capitan, Mac OS X 10.12 Sierra, Mac OS X 10.13 High Sierra, Mac OS X 10.14 Mojave Linux operating systems supported Yes Operating system version 4.2 Operating system installed QNAP Turbo System Management features On/off switch Yes Web-based management Yes Reset button Yes Power Power supply location External Power supply unit (PSU) capacity 60 WFan voltage 12 VAC input voltage 100-240 VNumber of power supply units 1 External power adapter Yes Weight & dimensions Width 102 mm Depth 225 mm Height 168.5 mm Packaging content Quick installation guide Yes External power adapter Yes Cables included AC, LAN (RJ-45) System requirements Windows operating systems supported Windows 10, Windows 7, Windows 8, Windows 8.1 Server operating systems supported Windows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016 Mac operating systems supported Mac OS X 10.10 Yosemite, Mac OS X 10.11 El Capitan, Mac OS X 10.12 Sierra, Mac OS X 10.13 High Sierra, Mac OS X 10.14 Mojave Linux operating systems supported Yes Operational conditions Operating temperature (T-T)0
- 40 &176;COperating relative humidity (H-H)5
- 95% Certificates Digital Living Network Alliance (DLNA) certified Yes Packaging data Cables included AC, LAN (RJ-45)"\n\n\n\nhttp://objects.icecat.biz/objects/mmo_62321080_1541170234_8134_23350.pdf














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Facing the increasing demand for data storage, sharing & multimedia processing, more & more users are looking for a NAS system with good performance & an affordable price tag. The Intel&174; quad-core TS-251+ provides an uncompromising high-performance scalable storage solution for professional users. Powered by the intelligent QTS 4.2 operating system, the TS-251+ performs as an easy-to-use yet powerful NAS for data backup, file synchronization & sharing, remote access & multimedia applications, & is ideal for users to create a secure private cloud to access their data easily.\n \n
- Centralize your file storage, sharing & backup with excellent performance\n
- Run multiple Windows&174;, Linux&174;, UNIX&174; & Android&132;&162; based virtual machines with the Virtualization Station\n
- Operate multiple isolated Linux&174; systems as well as download containerized apps with Container Station\n
- Enjoy the best audio-visual experience with HDMI output & the free remote control\n
- Transcode Full HD videos on-the-fly or offline\n
- Stream multimedia files via DLNA&174;, Air Play&174;, Chromecast&132;&162; & Bluetooth&174; with multi-zone multimedia control\n
- Quickly find specific files by real-time, natural search with Qsirch\n
- Scale up to 10 drives with QNAP UX-800P expansion enclosure\n \n Quad-core 64-bit Intel&174; Celeron&174; CPU for exceptional performance\n The TS-251+ is powered by a 64-bit Intel&174; Celeron&174; quad-core 2.0 G Hz processor & has 2GB/8GB energy-efficient DDR3L RAM (upgradable to 8GB) & dual Gigabit LAN ports, delivering up to 225 MB/s read & write speeds with port trunking mode. The TS-251+ can also automatically increase the processor's clock rate from 2.0 G Hz to 2.42 G Hz when needed for CPU-intensive tasks. The TS-251+ supports AES 256-bit volume & folder encryption with transfer speeds of up to 205 MB/s, boosting system performance & security while ensuring the safety of sensitive personal data stored in the TS-251+.\n \n QTS 4.2
- Simple & efficient\n Thanks to the intuitive user interface of QTS 4.2, your NAS experience is smarter, smoother & spectacular. Its modern flat design streamlines loading times, & the intelligent desktop means that you can quickly find desired functions, create desktop shortcuts or group shortcuts, monitor important system information on a real-time basis, & open multiple application windows to run multiple tasks concurrently, bringing greater operating efficiency. QTS breaks the barriers of devices, platforms & geography to bring optimized cloud experiences to you, & incorporates more advanced features including volume/LUN snapshot, remote connection to public cloud services in File Station, multi-zone multimedia system, & more.\n \n Run additional operating systems on the TS-251+\n The Virtualization Station transforms the TS-251+ into a 2-in-a-box NAS that can function as an all-in-one NAS & a virtualization platform that supports multiple operating systems, fast VM creation, VM backup & restoration, VM import/export, snapshot, Device Management for centrally managing VM, & enables desktop operations on web browsers. With the easy-to-use interface, you can centrally manage all of the VMs created on the TS-251+ with minimal effort. You can also download VMs on demand from online VM markets & import them to the TS-251+ without any complex procedures.\n \n Container Station " LXC & Docker&174; Containers inclusive\n QNAP Container Station exclusively integrates LXC & Docker&174; lightweight virtualization technologies, allowing you to operate multiple isolated Linux&174; systems on the TS-251+ as well as download apps from the built-in Docker Hub&174; Registry. It supports container import/export & permission settings, & features an informative dashboard & flexible user interface for you to manage multiple containers. You can experience the amazing Container Station & enjoy the playground of virtual containers with the TS-251+. Container Station also supports Online Document app, which means that you can directly view, edit & store files of various types anytime on your NAS, including Office documents, images & text files.\n \n Real-time & offline video transcoding\n The TS-251+ delivers superior real-time video transcoding (up to 4K H.264) to convert your videos to formats that can be smoothly played on PCs, mobile devices & Smart TVs. It allows for multiple devices to simultaneously view different videos stored on the TS-251+ with on-the-fly hardware accelerated transcoding, saving your time in converting videos to different formats for different devices.\n \n With the benefits of offline transcoding, if you can only connect to an Internet connection with limited/restricted bandwidth, you can still enjoy smooth videos via File Station, Video Station, or the Qfile app by selecting a pre-rendered lower-resolution video, saving system resources of the TS-251+ for other applications. The TS-251+ also means that you can set a dedicated folder for automatic video transcoding.\n \n Enjoy media freely with multi-zone multimedia control\n Use your TS-251+ as a multi-zone multimedia system to fill every corner of your house with your choice of media. You can centrally manage & stream photos, music & videos from the TS-251+ to different rooms from a single device using Bluetooth&174;& USB (Universal Serial Bus) devices connected to the TS-251+ (for music streaming only), HDMI, DLNA&174;, Apple TV&174; & Chromecast&132;&162;*. Every room member in different zones can enjoy the convenience & simplicity for media playback & multimedia storage.\n \n Alternatively, to enjoy multimedia yourself, you can choose DLNA-compatible devices, use the Qfile app on an i OS&174; device to browse videos/photos & play on the TV via Apple TV&174;, or transform the TS-251+ into a powerful streaming machine with DLNA&174;, Roku&174;, Amazon&174; Fire TV, & Google TV&132;&162; support with the support of Plex Media Server.\n \n Qsirch " A smarter, faster way to search\n Quickly & easily find documents, photos, videos, & music with Qsirch, QNAP's new built-in NAS search application lets you find what you need by real-time, natural search. Simply type in as much as you know about what you are trying to find, including parts of the file name or even words/phrases in the document, & Qsirch will display a list of matches, complete with thumbnails, as you type. Qsirch even remembers your search history so you can quickly navigate to files you've previously searched for. Qsirch is a huge productivity boost that greatly reduces the amount of time spent looking for files on the NAS so you can focus on other tasks.\n \n Cross-platform file sharing, centralized data storage\n The TS-251+ supports SMB/CIFS, NFS, & AFP protocols for file sharing across Windows&174;, Mac&174; & Linux&174;/UNIX&174;. Data, logs & ISO image of CDs & DVDs can be centrally stored in the TS-251+ & protected by an integrated antivirus solution.\n \n File Station integrated with cloud services\n The web-based File Station enables you to easily upload, download, & manage files on your TS-251+ wherever there is an internet connection. Supporting file extraction, folder creation, & smart search for files & folders, the File Station also means that you can easily share files with colleagues & friends via unique URLs, email, & a shared space. What's even better, you can also directly browse & transfer files between the TS-251+ & public cloud services like Google Drive&132;&162;, Dropbox&174;, Microsoft&174; One Drive, Box&174;, Yandex&174; Disk & Amazon&174; Cloud Drive through File Station, & view files with Office Online & Google Docs&132;&162; or directly open them with a Google Chrome&132;&162; office extension.\n \n Well-rounded backup solutions to secure data\n QNAP Net Bak Replicator supports real-time & scheduled data backup on Windows including Outlook email archiving. Apple Time Machine&174; is also supported to provide Mac&174; OS X users with a solution to effortlessly back up data to the TS-251+. The front panel USB (Universal Serial Bus) 3.0 port on the TS-251+ features a one-touch-copy function for you to instantly back up data on external drives to the TS-251+ with just one click, or alternatively to back up data from the TS-251+ to external drives. A wide range of third-party backup software such as Acronis&174; True Image & Symantec&174; Backup Exec are also supported.\n \n Disaster recovery solutions bring peace of mind\n The TS-251+ offers various data recovery options. RTRR (Real-Time Remote Replication) supports real time & scheduled data backup to remote QNAP NAS or FTP servers & synchronizes files to remote folders from local folders with better backup efficiency. You can enjoy backup versioning to preserve a certain amount of versions, with options of simple versioning to schedule how many versions should be retained & for how long, or smart versioning with a rotation scheme that automatically replaces earlier backup versions. The TS-251+ also supports rsync protocol to back up data to remote servers on a scheduled basis. Data can also be backed up to & restored from a range of cloud storage services, including Amazon&174; S3, Amazon&174; Glacier, Microsoft&174; Azure&132;&162;, Elephant Drive&174;, Dropbox&174;, Google Drive&132;&162;, Google Cloud Storage&132;&162;, & more.\n \n Volume & LUN snapshot simplifies restoration\n Not limited to high-end models, the TS-251+ brings the highly-anticipated snapshot function for your flexible usage.QTS Storage Manager adds an easy-to-use web-based snapshot tool for you to easily back up & restore data on the TS-251+ back to any point of time to prevent loss of important data. You can take up to 256 snapshots per volume or LUN, efficiently replicate volume/LUN snapshots to remote servers by copying only the changes made, & quickly clone a volume /LUN snapshot as a local volume without interrupting the current system operation. You can even set up the system to automatically take a snapshot of the volume before backup via RTRR/rsync, even when the file is opened.\n \n Comprehensive security options\n In open network environments, data on the connected devices may be exposed in a potential hack. The TS-251+ provides numerous security options, such as 2-step verification, encrypted access, IP blocking, & more. Administrators can also control the access rights of each user to different folders, preventing unauthorized access to important files. The TS-251+ is validated with military-level FIPS 140-2 AES 256-bit encryption, preventing sensitive data from unauthorized access & breach even if the hard drives or the entire system were stolen.\n \n Secure access with VPN Server & VPN Client\n The TS-251+ can be a VPN server with L2TP/IPsec, Open VPN, & PPTP support, allowing you to securely access data shared within the private local network. The TS-251+ also supports VPN Client for PPTP & Open VPN to protect your privacy during data transmission.\n \n File synchronization across devices & clouds\n Qsync utility turns your TS-251+ into a safe, large-capacity data center for file synchronization. Any file uploaded to the TS-251+ will be made available for all linked devices, such as computers, laptops or mobile devices. Qsync is especially useful for frequent travelers to manage files & always have the most up-to-date files on different devices. Qsync provides multiple ways of file synchronization & group file sharing, greatly enhancing the flexibility of team projects & collaboration. It also supports centralized configuration, & means that you can remotely erase the Qsync folder on a lost device to avoid data breaches, & even restore it after you have retrieved the device. You can also install the Cloud Drive Sync app from QTS App Center to easily sync files with Google Drive&132;&162; & Dropbox&174; cloud storage.\n \n Comprehensive surveillance solution providing 24/7 security\n The TS-251+'s Surveillance Station offers a professional surveillance solution with a user-friendly management interface, a wide range of over 3, 000 compatible IP camera models, & expandable IP camera channel licenses. It supports real-time monitoring, video & audio recording & playback with a wide range of customizable settings. You can also install the Vmobile app on your i OS&174; or Android&132;&162; devices to manage the monitoring of cameras anytime, anywhere, to safeguard your office environment, or install the Vcam mobile app to turn your device into a network camera to instantly record to your TS-251+. The TS-251+ offers 2 free IP camera channels & you can expand up to 40 channels by purchasing additional licenses.\n \n Access & enjoy with your mobile devices\n The TS-251+ is your private cloud storage that virtually enlarges the capacity of your smart mobile devices. Qfile means that you can access, upload, download, manage, & share stored files easily as if you are carrying tons of files in your pocket. If Qfile is installed on an i OS&174; device, users can also browse videos & photos stored on the TS-251+ & play on a TV via Apple&174; TV. Qmanager lets you monitor & manage the TS-251+ remotely & efficiently without turning on your PC. You can take & share digital notes with Qnotes, & enjoy & share music, photos & videos on the TS-251+ anywhere & anytime with Qmusic, Qphoto & Qvideo apps.\n \n Install-on-demand apps to extend NAS functionality\n The TS-251+ has a built-in App Center that provides various install-on-demand apps developed by QNAP & third-party developers, including tools for backup/sync, business, content management, communications, download, entertainment, & much more. It is also a centralized location for managing & updating installed apps. In addition, QNAP's development platform embraces the open-source spirit to enable developers to create their own apps, adding potentially limitless potential for the TS-251+.\n \n LED indicators with adjustable brightness controls\n With adjustable 3-stage brightness controls for LED indicators, the TS-251+ provides flexible LED brightness options. Based on the surrounding environment, you can adjust the brightness of all system indicators & also schedule the system to automatically dim the LEDs at certain times when needed.\n \n Expand storage capacity easily\n The TS-251+ supports online capacity expansion for archiving rapidly growing data by connecting a QNAP expansion enclosure. With the QNAP scale-up solution, the raw storage capacity can be expanded on dem&, making the TS-251+ an ideal file center with large storage capacity for storage-intensive business applications.\n \n With the support of QJBOD Express (JBOD enclosures roaming), you can just connect a large capacity QNAP expansion enclosure to the TS-251+, & migrate data to another NAS through the JBOD enclosure without network connectivity.\n \n Energy-saving & eco-friendly\n The TS-251+ utilizes a 22nm CPU & DDR3L RAM which feature low voltage, low power consumption, maintaining high performance in system operations with the benefit of energy-saving. Other eco-friendly designs include S3 sleep mode, HDD standby, scheduled power on/off, hard disk standby mode, & Wake on LAN. QNAP also packs the TS-251+ in an eco-friendly box to minimize the environmental impact.\n \n Easy-to-use NAS management tools\n \n The TS-251+ provides comprehensive system tools to increase management efficiency.\n \n Administrators can turn on the Turbo NAS via LAN to save energy & improve security.\n \n \n The Turbo NAS supports Syslog server that collects logs from various connected devices over the Internet & saves the data, enabling centralized log management with greater efficiency.\n\n Storage Total installed storage capacity 20 TBOnline RAID migration Yes Online RAID expansion Yes Bad block scan Yes Storage drives installed Yes Installed storage drive type HDDSupported storage drive types HDD, SSDNumber of storage drives supported 2 Hot-swap drive bays Yes RAID support Yes Supported file systems FAT32, HFS+, NTFS, ex FAT, ext 3, ext 4RAID levels 0, 1, JBODSupported storage drive interfaces Serial ATA II, Serial ATA IIIStorage drive sizes supported 2.5, 3.5" Processor Processor frequency 2 GHz Processor family Intel&174; Celeron&174; Processor cores 4 Memory Internal memory type DDR3 L Internal memory 2 GBMemory clock speed 1600 MHz Maximum RAM supported 8 GBMemory slots 2x SODIMMFlash memory 512 MBNetworking Link aggregation Yes Dynamic DNS (DDNS) Yes Ethernet LANYes Ethernet LAN data rates 10, 100, 1000 Mbit/s Wi-Fi No Wake-on-LAN ready Yes Supported network protocols CIFS/SMB, AFP v 3.3, NFS v 3, FTP, FTPS, SFTP, TFTP, HTTP (S), Telnet, SSH, i SCSI, SNMP, SMTP, SMSCJumbo frames support Yesi SCSI support Yes DHCP server Yes DHCP client Yes Ports & interfaces USB port Yes USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity 2USB 2.0 ports quantity 2HDMI ports quantity 1 Ethernet LAN (RJ-45) ports 2 Hard drive RAID support Yes Supported file systems FAT32, HFS+, NTFS, ex FAT, ext 3, ext 4RAID levels 0, 1, JBODDesign Cooling type Active Fan diameter 7 cm Cable lock slot type Kensington Product colour Black Number of fans 1 fan (s)LED indicators HDD, LAN, Power, Status, USBChassis type Tower Cable lock slot Yes Technical details Type NASDevice class Home & Home Office Backup function Yes Backup features Cloud, USB drive, i SCSI LUNProduct colour Black Noise level 15.4 d BLED indicators HDD, LAN, Power, Status, USBChassis type Tower Buzzer Yes Number of simultaneous users 4096 user (s) Number of fans 1 fan (s) Performance Built-in i Tunes server Yes Built-in FTP server Yes System log Yes Share folder access right management Yes Share folder 512S.M.A.R.T. support Yes Browser supported Apple Safari 7+, Google Chrome, Microsoft Internet Explorer 10+, Mozilla Firefox Mac compatibility Yes Remotely operated Yes Backup button Yes Universal Plug & Play (UPn P) Yes Type NASDevice class Home & Home Office Backup function Yes Backup features Cloud, USB drive, i SCSI LUNOn/off switch Yes Windows operating systems supported Windows 10, Windows 10 Education, Windows 10 Education x 64, Windows 10 Enterprise, Windows 10 Enterprise x 64, Windows 10 Home, Windows 10 Home x 64, Windows 10 IOT Core, Windows 10 Pro, Windows 10 Pro x 64, Windows 7, Windows 7 Enterprise, Windows 7 Enterprise x 64, Windows 7 Home Basic, Windows 7 Home Basic x 64, Windows 7 Home Premium, Windows 7 Home Premium x 64, Windows 7 Professional, Windows 7 Professional x 64, Windows 7 Starter, Windows 7 Starter x 64, Windows 7 Ultimate, Windows 7 Ultimate x 64, Windows 7 x 64, Windows 8, Windows 8 Enterprise, Windows 8 Enterprise x 64, Windows 8 Pro, Windows 8 Pro x 64, Windows 8 x 64 Server operating systems supported Windows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016 Mac operating systems supported Mac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion, Mac OS X 10.9 Mavericks Linux operating systems supported Yes Web-based management Yes Security algorithms 256-bit AES, FIPS 140-2, HTTPS, SSHReset button Yes Operating system version 4.3 Operating system installed QNAP Turbo System Noise level 15.4 d B Management protocols SNMPBuzzer Yes Snapshot Yes Cooling Cooling type Active Fan diameter 7 cm Fan voltage 12 VNumber of fans 1 fan (s) Security Cable lock slot type Kensington Security algorithms 256-bit AES, FIPS 140-2, HTTPS, SSHCable lock slot Yes Software Mac compatibility Yes Windows operating systems supported Windows 10, Windows 10 Education, Windows 10 Education x 64, Windows 10 Enterprise, Windows 10 Enterprise x 64, Windows 10 Home, Windows 10 Home x 64, Windows 10 IOT Core, Windows 10 Pro, Windows 10 Pro x 64, Windows 7, Windows 7 Enterprise, Windows 7 Enterprise x 64, Windows 7 Home Basic, Windows 7 Home Basic x 64, Windows 7 Home Premium, Windows 7 Home Premium x 64, Windows 7 Professional, Windows 7 Professional x 64, Windows 7 Starter, Windows 7 Starter x 64, Windows 7 Ultimate, Windows 7 Ultimate x 64, Windows 7 x 64, Windows 8, Windows 8 Enterprise, Windows 8 Enterprise x 64, Windows 8 Pro, Windows 8 Pro x 64, Windows 8 x 64 Server operating systems supported Windows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016 Mac operating systems supported Mac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion, Mac OS X 10.9 Mavericks Linux operating systems supported Yes Operating system version 4.3 Operating system installed QNAP Turbo System Management features On/off switch Yes Web-based management Yes Reset button Yes Management protocols SNMPPower Power consumption (HDD standby)10.56 WPower supply location External Power supply unit (PSU) capacity 60 WFan voltage 12 VAC input voltage 100
- 240 VPower consumption (typical)18.09 WPower consumption (sleep)0.57 WExternal power adapter Yes Weight & dimensions Width 102 mm Depth 219 mm Height 169 mm Weight 1.28kg Package weight 2.32kg Packaging content Number of screws 14 Handheld remote control Yes Quick installation guide Yes External power adapter Yes Cables included AC, LAN (RJ-45) System requirements Windows operating systems supported Windows 10, Windows 10 Education, Windows 10 Education x 64, Windows 10 Enterprise, Windows 10 Enterprise x 64, Windows 10 Home, Windows 10 Home x 64, Windows 10 IOT Core, Windows 10 Pro, Windows 10 Pro x 64, Windows 7, Windows 7 Enterprise, Windows 7 Enterprise x 64, Windows 7 Home Basic, Windows 7 Home Basic x 64, Windows 7 Home Premium, Windows 7 Home Premium x 64, Windows 7 Professional, Windows 7 Professional x 64, Windows 7 Starter, Windows 7 Starter x 64, Windows 7 Ultimate, Windows 7 Ultimate x 64, Windows 7 x 64, Windows 8, Windows 8 Enterprise, Windows 8 Enterprise x 64, Windows 8 Pro, Windows 8 Pro x 64, Windows 8 x 64 Server operating systems supported Windows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016 Mac operating systems supported Mac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion, Mac OS X 10.9 Mavericks Linux operating systems supported Yes Operational conditions Operating temperature (T-T)0
- 40 &176;COperating relative humidity (H-H)5
- 95% Packaging data Package weight 2.32kg Cables included AC, LAN (RJ-45) Other features Number of simultaneous users 4096 user (s)\n\n\n\nhttp://objects.icecat.biz/objects/mmo_38324872_1528663688_956_22088.pdf











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Facing the increasing demand for data storage, sharing & multimedia processing, more & more users are looking for a NAS system with good performance & an affordable price tag. The Intel&174; quad-core TS-251+ provides an uncompromising high-performance scalable storage solution for professional users. Powered by the intelligent QTS 4.2 operating system, the TS-251+ performs as an easy-to-use yet powerful NAS for data backup, file synchronization & sharing, remote access & multimedia applications, & is ideal for users to create a secure private cloud to access their data easily.\n\n- Centralize your file storage, sharing & backup with excellent performance\n- Run multiple Windows&174;, Linux&174;, UNIX&174; & Android&132;&162; based virtual machines with the Virtualization Station\n- Operate multiple isolated Linux&174; systems as well as download containerized apps with Container Station\n- Enjoy the best audio-visual experience with HDMI output & the free remote control\n- Transcode Full HD videos on-the-fly or offline\n- Stream multimedia files via DLNA&174;, Air Play&174;, Chromecast&132;&162; & Bluetooth&174; with multi-zone multimedia control\n- Quickly find specific files by real-time, natural search with Qsirch\n- Scale up to 10 drives with QNAP UX-800P expansion enclosure\n\n Quad-core 64-bit Intel&174; Celeron&174; CPU for exceptional performance\n The TS-251+ is powered by a 64-bit Intel&174; Celeron&174; quad-core 2.0 G Hz processor & has 2GB/8GB energy-efficient DDR3L RAM (upgradable to 8GB) & dual Gigabit LAN ports, delivering up to 225 MB/s read & write speeds with port trunking mode. The TS-251+ can also automatically increase the processor's clock rate from 2.0 G Hz to 2.42 G Hz when needed for CPU-intensive tasks. The TS-251+ supports AES 256-bit volume & folder encryption with transfer speeds of up to 205 MB/s, boosting system performance & security while ensuring the safety of sensitive personal data stored in the TS-251+.\n\n QTS 4.2
- Simple & efficient\n Thanks to the intuitive user interface of QTS 4.2, your NAS experience is smarter, smoother & spectacular. Its modern flat design streamlines loading times, & the intelligent desktop means that you can quickly find desired functions, create desktop shortcuts or group shortcuts, monitor important system information on a real-time basis, & open multiple application windows to run multiple tasks concurrently, bringing greater operating efficiency. QTS breaks the barriers of devices, platforms & geography to bring optimized cloud experiences to you, & incorporates more advanced features including volume/LUN snapshot, remote connection to public cloud services in File Station, multi-zone multimedia system, & more.\n\n Run additional operating systems on the TS-251+\n The Virtualization Station transforms the TS-251+ into a 2-in-a-box NAS that can function as an all-in-one NAS & a virtualization platform that supports multiple operating systems, fast VM creation, VM backup & restoration, VM import/export, snapshot, Device Management for centrally managing VM, & enables desktop operations on web browsers. With the easy-to-use interface, you can centrally manage all of the VMs created on the TS-251+ with minimal effort. You can also download VMs on demand from online VM markets & import them to the TS-251+ without any complex procedures.\n\n Container Station " LXC & Docker&174; Containers inclusive\n QNAP Container Station exclusively integrates LXC & Docker&174; lightweight virtualization technologies, allowing you to operate multiple isolated Linux&174; systems on the TS-251+ as well as download apps from the built-in Docker Hub&174; Registry. It supports container import/export & permission settings, & features an informative dashboard & flexible user interface for you to manage multiple containers. You can experience the amazing Container Station & enjoy the playground of virtual containers with the TS-251+. Container Station also supports Online Document app, which means that you can directly view, edit & store files of various types anytime on your NAS, including Office documents, images & text files.\n\n Real-time & offline video transcoding\n The TS-251+ delivers superior real-time video transcoding (up to 4K H.264) to convert your videos to formats that can be smoothly played on PCs, mobile devices & Smart TVs. It allows for multiple devices to simultaneously view different videos stored on the TS-251+ with on-the-fly hardware accelerated transcoding, saving your time in converting videos to different formats for different devices.\n\n With the benefits of offline transcoding, if you can only connect to an Internet connection with limited/restricted bandwidth, you can still enjoy smooth videos via File Station, Video Station, or the Qfile app by selecting a pre-rendered lower-resolution video, saving system resources of the TS-251+ for other applications. The TS-251+ also means that you can set a dedicated folder for automatic video transcoding.\n\n Enjoy media freely with multi-zone multimedia control\n Use your TS-251+ as a multi-zone multimedia system to fill every corner of your house with your choice of media. You can centrally manage & stream photos, music & videos from the TS-251+ to different rooms from a single device using Bluetooth&174;& USB (Universal Serial Bus) devices connected to the TS-251+ (for music streaming only), HDMI, DLNA&174;, Apple TV&174; & Chromecast&132;&162;*. Every room member in different zones can enjoy the convenience & simplicity for media playback & multimedia storage.\n\n Alternatively, to enjoy multimedia yourself, you can choose DLNA-compatible devices, use the Qfile app on an i OS&174; device to browse videos/photos & play on the TV via Apple TV&174;, or transform the TS-251+ into a powerful streaming machine with DLNA&174;, Roku&174;, Amazon&174; Fire TV, & Google TV&132;&162; support with the support of Plex Media Server.\n\n Qsirch " A smarter, faster way to search\n Quickly & easily find documents, photos, videos, & music with Qsirch, QNAP's new built-in NAS search application lets you find what you need by real-time, natural search. Simply type in as much as you know about what you are trying to find, including parts of the file name or even words/phrases in the document, & Qsirch will display a list of matches, complete with thumbnails, as you type. Qsirch even remembers your search history so you can quickly navigate to files you've previously searched for. Qsirch is a huge productivity boost that greatly reduces the amount of time spent looking for files on the NAS so you can focus on other tasks.\n\n Cross-platform file sharing, centralized data storage\n The TS-251+ supports SMB/CIFS, NFS, & AFP protocols for file sharing across Windows&174;, Mac&174; & Linux&174;/UNIX&174;. Data, logs & ISO image of CDs & DVDs can be centrally stored in the TS-251+ & protected by an integrated antivirus solution.\n\n File Station integrated with cloud services\n The web-based File Station enables you to easily upload, download, & manage files on your TS-251+ wherever there is an internet connection. Supporting file extraction, folder creation, & smart search for files & folders, the File Station also means that you can easily share files with colleagues & friends via unique URLs, email, & a shared space. What's even better, you can also directly browse & transfer files between the TS-251+ & public cloud services like Google Drive&132;&162;, Dropbox&174;, Microsoft&174; One Drive, Box&174;, Yandex&174; Disk & Amazon&174; Cloud Drive through File Station, & view files with Office Online & Google Docs&132;&162; or directly open them with a Google Chrome&132;&162; office extension.\n\n Well-rounded backup solutions to secure data\n QNAP Net Bak Replicator supports real-time & scheduled data backup on Windows including Outlook email archiving. Apple Time Machine&174; is also supported to provide Mac&174; OS X users with a solution to effortlessly back up data to the TS-251+. The front panel USB (Universal Serial Bus) 3.0 port on the TS-251+ features a one-touch-copy function for you to instantly back up data on external drives to the TS-251+ with just one click, or alternatively to back up data from the TS-251+ to external drives. A wide range of third-party backup software such as Acronis&174; True Image & Symantec&174; Backup Exec are also supported.\n\n Disaster recovery solutions bring peace of mind\n The TS-251+ offers various data recovery options. RTRR (Real-Time Remote Replication) supports real time & scheduled data backup to remote QNAP NAS or FTP servers & synchronizes files to remote folders from local folders with better backup efficiency. You can enjoy backup versioning to preserve a certain amount of versions, with options of simple versioning to schedule how many versions should be retained & for how long, or smart versioning with a rotation scheme that automatically replaces earlier backup versions. The TS-251+ also supports rsync protocol to back up data to remote servers on a scheduled basis. Data can also be backed up to & restored from a range of cloud storage services, including Amazon&174; S3, Amazon&174; Glacier, Microsoft&174; Azure&132;&162;, Elephant Drive&174;, Dropbox&174;, Google Drive&132;&162;, Google Cloud Storage&132;&162;, & more.\n\n Volume & LUN snapshot simplifies restoration\n Not limited to high-end models, the TS-251+ brings the highly-anticipated snapshot function for your flexible usage.QTS Storage Manager adds an easy-to-use web-based snapshot tool for you to easily back up & restore data on the TS-251+ back to any point of time to prevent loss of important data. You can take up to 256 snapshots per volume or LUN, efficiently replicate volume/LUN snapshots to remote servers by copying only the changes made, & quickly clone a volume /LUN snapshot as a local volume without interrupting the current system operation. You can even set up the system to automatically take a snapshot of the volume before backup via RTRR/rsync, even when the file is opened.\n\n Comprehensive security options\n In open network environments, data on the connected devices may be exposed in a potential hack. The TS-251+ provides numerous security options, such as 2-step verification, encrypted access, IP blocking, & more. Administrators can also control the access rights of each user to different folders, preventing unauthorized access to important files. The TS-251+ is validated with military-level FIPS 140-2 AES 256-bit encryption, preventing sensitive data from unauthorized access & breach even if the hard drives or the entire system were stolen.\n\n Secure access with VPN Server & VPN Client\n The TS-251+ can be a VPN server with L2TP/IPsec, Open VPN, & PPTP support, allowing you to securely access data shared within the private local network. The TS-251+ also supports VPN Client for PPTP & Open VPN to protect your privacy during data transmission.\n\n File synchronization across devices & clouds\n Qsync utility turns your TS-251+ into a safe, large-capacity data center for file synchronization. Any file uploaded to the TS-251+ will be made available for all linked devices, such as computers, laptops or mobile devices. Qsync is especially useful for frequent travelers to manage files & always have the most up-to-date files on different devices. Qsync provides multiple ways of file synchronization & group file sharing, greatly enhancing the flexibility of team projects & collaboration. It also supports centralized configuration, & means that you can remotely erase the Qsync folder on a lost device to avoid data breaches, & even restore it after you have retrieved the device. You can also install the Cloud Drive Sync app from QTS App Center to easily sync files with Google Drive&132;&162; & Dropbox&174; cloud storage.\n\n Comprehensive surveillance solution providing 24/7 security\n The TS-251+'s Surveillance Station offers a professional surveillance solution with a user-friendly management interface, a wide range of over 3, 000 compatible IP camera models, & expandable IP camera channel licenses. It supports real-time monitoring, video & audio recording & playback with a wide range of customizable settings. You can also install the Vmobile app on your i OS&174; or Android&132;&162; devices to manage the monitoring of cameras anytime, anywhere, to safeguard your office environment, or install the Vcam mobile app to turn your device into a network camera to instantly record to your TS-251+. The TS-251+ offers 2 free IP camera channels & you can expand up to 40 channels by purchasing additional licenses.\n\n Access & enjoy with your mobile devices\n The TS-251+ is your private cloud storage that virtually enlarges the capacity of your smart mobile devices. Qfile means that you can access, upload, download, manage, & share stored files easily as if you are carrying tons of files in your pocket. If Qfile is installed on an i OS&174; device, users can also browse videos & photos stored on the TS-251+ & play on a TV via Apple&174; TV. Qmanager lets you monitor & manage the TS-251+ remotely & efficiently without turning on your PC. You can take & share digital notes with Qnotes, & enjoy & share music, photos & videos on the TS-251+ anywhere & anytime with Qmusic, Qphoto & Qvideo apps.\n\n Install-on-demand apps to extend NAS functionality\n The TS-251+ has a built-in App Center that provides various install-on-demand apps developed by QNAP & third-party developers, including tools for backup/sync, business, content management, communications, download, entertainment, & much more. It is also a centralized location for managing & updating installed apps. In addition, QNAP's development platform embraces the open-source spirit to enable developers to create their own apps, adding potentially limitless potential for the TS-251+.\n\n LED indicators with adjustable brightness controls\n With adjustable 3-stage brightness controls for LED indicators, the TS-251+ provides flexible LED brightness options. Based on the surrounding environment, you can adjust the brightness of all system indicators & also schedule the system to automatically dim the LEDs at certain times when needed.\n\n Expand storage capacity easily\n The TS-251+ supports online capacity expansion for archiving rapidly growing data by connecting a QNAP expansion enclosure. With the QNAP scale-up solution, the raw storage capacity can be expanded on dem&, making the TS-251+ an ideal file center with large storage capacity for storage-intensive business applications.\n\n With the support of QJBOD Express (JBOD enclosures roaming), you can just connect a large capacity QNAP expansion enclosure to the TS-251+, & migrate data to another NAS through the JBOD enclosure without network connectivity.\n\n Energy-saving & eco-friendly\n The TS-251+ utilizes a 22nm CPU & DDR3L RAM which feature low voltage, low power consumption, maintaining high performance in system operations with the benefit of energy-saving. Other eco-friendly designs include S3 sleep mode, HDD standby, scheduled power on/off, hard disk standby mode, & Wake on LAN. QNAP also packs the TS-251+ in an eco-friendly box to minimize the environmental impact.\n\n Easy-to-use NAS management tools\n\n The TS-251+ provides comprehensive system tools to increase management efficiency.\n\n Administrators can turn on the Turbo NAS via LAN to save energy & improve security.\n\n\n The Turbo NAS supports Syslog server that collects logs from various connected devices over the Internet & saves the data, enabling centralized log management with greater efficiency. Feature Feature Value Total installed storage capacity 6 TBStorage drives installed Y Installed storage drive type HDDNumber of storage drives installed 2 Supported storage drive types HDD, SSDNumber of storage drives supported 2 Storage drive capacity 3000 GBRAID support Y Hot-swap drive bays Y Supported storage drive interfaces Serial ATA II, Serial ATA IIIStorage drive sizes supported 2.5, 3.5"RAID levels 0, 1, JBODOnline RAID migration Y Online RAID expansion Y Supported file systems FAT32, HFS+, NTFS, ex FAT, ext 3, ext 4 Bad block scan Y Processor frequency 2 GHz Processor family Intel&174; Celeron&174; Processor cores 4 Internal memory 2 GBInternal memory type DDR3 L Memory clock speed 1600 MHz Maximum RAM supported 8 GBMemory slots 2x SODIMMFlash memory 512 MBEthernet LANYWi-Fi N Ethernet LAN data rates 10, 100, 1000 Mbit/s DHCP client YDHCP server Y Jumbo frames support Yi SCSI support Y Wake-on-LAN ready Y Supported network protocols CIFS/SMB, AFP v 3.3, NFS v 3, FTP, FTPS, SFTP, TFTP, HTTP (S), Telnet, SSH, i SCSI, SNMP, SMTP, SMSCLink aggregation Y Dynamic DNS (DDNS)YEthernet LAN (RJ-45) ports 2USB port YUSB 2.0 ports quantity 2USB 3.0 (3.1 Gen 1) Type-A ports quantity 2HDMI ports quantity 1 Chassis type Tower Cooling type Active Product colour Black Number of fans 1 fan (s) Fan diameter 7 cm LED indicators HDD, LAN, Power, Status, USBCable lock slot Y Cable lock slot type Kensington Type NASDevice class Home & Home Office Backup function Y Backup features Cloud, USB drive, i SCSI LUNBuzzer Y Noise level 15.4 d B Snapshot Y Management protocols SNMPSecurity algorithms 256-bit AES, FIPS 140-2, HTTPS, SSHWeb-based management Y Reset button Y On/off switch Y Built-in i Tunes server Y Built-in FTP server Y Browser supported Apple Safari 7+, Google Chrome, Microsoft Internet Explorer 10+, Mozilla Firefox System log YS.M.A.R.T. support Y Share folder 512 Share folder access right management Y Remotely operated Y Backup button Y Universal Plug & Play (UPn P)YOperating system installed QNAP Turbo System Operating system version 4.3 Windows operating systems supported Windows 10, Windows 10 Education, Windows 10 Education x 64, Windows 10 Enterprise, Windows 10 Enterprise x 64, Windows 10 Home, Windows 10 Home x 64, Windows 10 IOT Core, Windows 10 Pro, Windows 10 Pro x 64, Windows 7, Windows 7 Enterprise, Windows 7 Enterprise x 64, Windows 7 Home Basic, Windows 7 Home Basic x 64, Windows 7 Home Premium, Windows 7 Home Premium x 64, Windows 7 Professional, Windows 7 Professional x 64, Windows 7 Starter, Windows 7 Starter x 64, Windows 7 Ultimate, Windows 7 Ultimate x 64, Windows 7 x 64, Windows 8, Windows 8 Enterprise, Windows 8 Enterprise x 64, Windows 8 Pro, Windows 8 Pro x 64, Windows 8 x 64 Linux operating systems supported Y Mac compatibility Y Mac operating systems supported Mac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion, Mac OS X 10.9 Mavericks Server operating systems supported Windows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016 Power supply location External Power supply unit (PSU) capacity 60 WPower consumption (typical)18.09 WPower consumption (sleep)0.57 WPower consumption (HDD standby)10.56 WAC input voltage 100
- 240 VFan voltage 12 VWidth 102 mm Depth 219 mm Height 169 mm Weight 1.28kg Package weight 2.32kg External power adapter Y Cables included AC, LAN (RJ-45) Quick installation guide Y Number of screws 14 Handheld remote control Y Operating temperature (T-T)0
- 40 &176;COperating relative humidity (H-H)5
- 95% Number of simultaneous users 4096 user (s)



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Facing the increasing demand for data storage, sharing & multimedia processing, more & more users are looking for a NAS system with good performance & an affordable price tag. The Intel&174; quad-core TS-251+ provides an uncompromising high-performance scalable storage solution for professional users. Powered by the intelligent QTS 4.2 operating system, the TS-251+ performs as an easy-to-use yet powerful NAS for data backup, file synchronization & sharing, remote access & multimedia applications, & is ideal for users to create a secure private cloud to access their data easily.\n\n- Centralize your file storage, sharing & backup with excellent performance\n- Run multiple Windows&174;, Linux&174;, UNIX&174; & Android&132;&162; based virtual machines with the Virtualization Station\n- Operate multiple isolated Linux&174; systems as well as download containerized apps with Container Station\n- Enjoy the best audio-visual experience with HDMI output & the free remote control\n- Transcode Full HD videos on-the-fly or offline\n- Stream multimedia files via DLNA&174;, Air Play&174;, Chromecast&132;&162; & Bluetooth&174; with multi-zone multimedia control\n- Quickly find specific files by real-time, natural search with Qsirch\n- Scale up to 10 drives with QNAP UX-800P expansion enclosure\n\n Quad-core 64-bit Intel&174; Celeron&174; CPU for exceptional performance\n The TS-251+ is powered by a 64-bit Intel&174; Celeron&174; quad-core 2.0 G Hz processor & has 2GB/8GB energy-efficient DDR3L RAM (upgradable to 8GB) & dual Gigabit LAN ports, delivering up to 225 MB/s read & write speeds with port trunking mode. The TS-251+ can also automatically increase the processor's clock rate from 2.0 G Hz to 2.42 G Hz when needed for CPU-intensive tasks. The TS-251+ supports AES 256-bit volume & folder encryption with transfer speeds of up to 205 MB/s, boosting system performance & security while ensuring the safety of sensitive personal data stored in the TS-251+.\n\n QTS 4.2
- Simple & efficient\n Thanks to the intuitive user interface of QTS 4.2, your NAS experience is smarter, smoother & spectacular. Its modern flat design streamlines loading times, & the intelligent desktop means that you can quickly find desired functions, create desktop shortcuts or group shortcuts, monitor important system information on a real-time basis, & open multiple application windows to run multiple tasks concurrently, bringing greater operating efficiency. QTS breaks the barriers of devices, platforms & geography to bring optimized cloud experiences to you, & incorporates more advanced features including volume/LUN snapshot, remote connection to public cloud services in File Station, multi-zone multimedia system, & more.\n\n Run additional operating systems on the TS-251+\n The Virtualization Station transforms the TS-251+ into a 2-in-a-box NAS that can function as an all-in-one NAS & a virtualization platform that supports multiple operating systems, fast VM creation, VM backup & restoration, VM import/export, snapshot, Device Management for centrally managing VM, & enables desktop operations on web browsers. With the easy-to-use interface, you can centrally manage all of the VMs created on the TS-251+ with minimal effort. You can also download VMs on demand from online VM markets & import them to the TS-251+ without any complex procedures.\n\n Container Station " LXC & Docker&174; Containers inclusive\n QNAP Container Station exclusively integrates LXC & Docker&174; lightweight virtualization technologies, allowing you to operate multiple isolated Linux&174; systems on the TS-251+ as well as download apps from the built-in Docker Hub&174; Registry. It supports container import/export & permission settings, & features an informative dashboard & flexible user interface for you to manage multiple containers. You can experience the amazing Container Station & enjoy the playground of virtual containers with the TS-251+. Container Station also supports Online Document app, which means that you can directly view, edit & store files of various types anytime on your NAS, including Office documents, images & text files.\n\n Real-time & offline video transcoding\n The TS-251+ delivers superior real-time video transcoding (up to 4K H.264) to convert your videos to formats that can be smoothly played on PCs, mobile devices & Smart TVs. It allows for multiple devices to simultaneously view different videos stored on the TS-251+ with on-the-fly hardware accelerated transcoding, saving your time in converting videos to different formats for different devices.\n\n With the benefits of offline transcoding, if you can only connect to an Internet connection with limited/restricted bandwidth, you can still enjoy smooth videos via File Station, Video Station, or the Qfile app by selecting a pre-rendered lower-resolution video, saving system resources of the TS-251+ for other applications. The TS-251+ also means that you can set a dedicated folder for automatic video transcoding.\n\n Enjoy media freely with multi-zone multimedia control\n Use your TS-251+ as a multi-zone multimedia system to fill every corner of your house with your choice of media. You can centrally manage & stream photos, music & videos from the TS-251+ to different rooms from a single device using Bluetooth&174;& USB (Universal Serial Bus) devices connected to the TS-251+ (for music streaming only), HDMI, DLNA&174;, Apple TV&174; & Chromecast&132;&162;*. Every room member in different zones can enjoy the convenience & simplicity for media playback & multimedia storage.\n\n Alternatively, to enjoy multimedia yourself, you can choose DLNA-compatible devices, use the Qfile app on an i OS&174; device to browse videos/photos & play on the TV via Apple TV&174;, or transform the TS-251+ into a powerful streaming machine with DLNA&174;, Roku&174;, Amazon&174; Fire TV, & Google TV&132;&162; support with the support of Plex Media Server.\n\n Qsirch " A smarter, faster way to search\n Quickly & easily find documents, photos, videos, & music with Qsirch, QNAP's new built-in NAS search application lets you find what you need by real-time, natural search. Simply type in as much as you know about what you are trying to find, including parts of the file name or even words/phrases in the document, & Qsirch will display a list of matches, complete with thumbnails, as you type. Qsirch even remembers your search history so you can quickly navigate to files you've previously searched for. Qsirch is a huge productivity boost that greatly reduces the amount of time spent looking for files on the NAS so you can focus on other tasks.\n\n Cross-platform file sharing, centralized data storage\n The TS-251+ supports SMB/CIFS, NFS, & AFP protocols for file sharing across Windows&174;, Mac&174; & Linux&174;/UNIX&174;. Data, logs & ISO image of CDs & DVDs can be centrally stored in the TS-251+ & protected by an integrated antivirus solution.\n\n File Station integrated with cloud services\n The web-based File Station enables you to easily upload, download, & manage files on your TS-251+ wherever there is an internet connection. Supporting file extraction, folder creation, & smart search for files & folders, the File Station also means that you can easily share files with colleagues & friends via unique URLs, email, & a shared space. What's even better, you can also directly browse & transfer files between the TS-251+ & public cloud services like Google Drive&132;&162;, Dropbox&174;, Microsoft&174; One Drive, Box&174;, Yandex&174; Disk & Amazon&174; Cloud Drive through File Station, & view files with Office Online & Google Docs&132;&162; or directly open them with a Google Chrome&132;&162; office extension.\n\n Well-rounded backup solutions to secure data\n QNAP Net Bak Replicator supports real-time & scheduled data backup on Windows including Outlook email archiving. Apple Time Machine&174; is also supported to provide Mac&174; OS X users with a solution to effortlessly back up data to the TS-251+. The front panel USB (Universal Serial Bus) 3.0 port on the TS-251+ features a one-touch-copy function for you to instantly back up data on external drives to the TS-251+ with just one click, or alternatively to back up data from the TS-251+ to external drives. A wide range of third-party backup software such as Acronis&174; True Image & Symantec&174; Backup Exec are also supported.\n\n Disaster recovery solutions bring peace of mind\n The TS-251+ offers various data recovery options. RTRR (Real-Time Remote Replication) supports real time & scheduled data backup to remote QNAP NAS or FTP servers & synchronizes files to remote folders from local folders with better backup efficiency. You can enjoy backup versioning to preserve a certain amount of versions, with options of simple versioning to schedule how many versions should be retained & for how long, or smart versioning with a rotation scheme that automatically replaces earlier backup versions. The TS-251+ also supports rsync protocol to back up data to remote servers on a scheduled basis. Data can also be backed up to & restored from a range of cloud storage services, including Amazon&174; S3, Amazon&174; Glacier, Microsoft&174; Azure&132;&162;, Elephant Drive&174;, Dropbox&174;, Google Drive&132;&162;, Google Cloud Storage&132;&162;, & more.\n\n Volume & LUN snapshot simplifies restoration\n Not limited to high-end models, the TS-251+ brings the highly-anticipated snapshot function for your flexible usage.QTS Storage Manager adds an easy-to-use web-based snapshot tool for you to easily back up & restore data on the TS-251+ back to any point of time to prevent loss of important data. You can take up to 256 snapshots per volume or LUN, efficiently replicate volume/LUN snapshots to remote servers by copying only the changes made, & quickly clone a volume /LUN snapshot as a local volume without interrupting the current system operation. You can even set up the system to automatically take a snapshot of the volume before backup via RTRR/rsync, even when the file is opened.\n\n Comprehensive security options\n In open network environments, data on the connected devices may be exposed in a potential hack. The TS-251+ provides numerous security options, such as 2-step verification, encrypted access, IP blocking, & more. Administrators can also control the access rights of each user to different folders, preventing unauthorized access to important files. The TS-251+ is validated with military-level FIPS 140-2 AES 256-bit encryption, preventing sensitive data from unauthorized access & breach even if the hard drives or the entire system were stolen.\n\n Secure access with VPN Server & VPN Client\n The TS-251+ can be a VPN server with L2TP/IPsec, Open VPN, & PPTP support, allowing you to securely access data shared within the private local network. The TS-251+ also supports VPN Client for PPTP & Open VPN to protect your privacy during data transmission.\n\n File synchronization across devices & clouds\n Qsync utility turns your TS-251+ into a safe, large-capacity data center for file synchronization. Any file uploaded to the TS-251+ will be made available for all linked devices, such as computers, laptops or mobile devices. Qsync is especially useful for frequent travelers to manage files & always have the most up-to-date files on different devices. Qsync provides multiple ways of file synchronization & group file sharing, greatly enhancing the flexibility of team projects & collaboration. It also supports centralized configuration, & means that you can remotely erase the Qsync folder on a lost device to avoid data breaches, & even restore it after you have retrieved the device. You can also install the Cloud Drive Sync app from QTS App Center to easily sync files with Google Drive&132;&162; & Dropbox&174; cloud storage.\n\n Comprehensive surveillance solution providing 24/7 security\n The TS-251+'s Surveillance Station offers a professional surveillance solution with a user-friendly management interface, a wide range of over 3, 000 compatible IP camera models, & expandable IP camera channel licenses. It supports real-time monitoring, video & audio recording & playback with a wide range of customizable settings. You can also install the Vmobile app on your i OS&174; or Android&132;&162; devices to manage the monitoring of cameras anytime, anywhere, to safeguard your office environment, or install the Vcam mobile app to turn your device into a network camera to instantly record to your TS-251+. The TS-251+ offers 2 free IP camera channels & you can expand up to 40 channels by purchasing additional licenses.\n\n Access & enjoy with your mobile devices\n The TS-251+ is your private cloud storage that virtually enlarges the capacity of your smart mobile devices. Qfile means that you can access, upload, download, manage, & share stored files easily as if you are carrying tons of files in your pocket. If Qfile is installed on an i OS&174; device, users can also browse videos & photos stored on the TS-251+ & play on a TV via Apple&174; TV. Qmanager lets you monitor & manage the TS-251+ remotely & efficiently without turning on your PC. You can take & share digital notes with Qnotes, & enjoy & share music, photos & videos on the TS-251+ anywhere & anytime with Qmusic, Qphoto & Qvideo apps.\n\n Install-on-demand apps to extend NAS functionality\n The TS-251+ has a built-in App Center that provides various install-on-demand apps developed by QNAP & third-party developers, including tools for backup/sync, business, content management, communications, download, entertainment, & much more. It is also a centralized location for managing & updating installed apps. In addition, QNAP's development platform embraces the open-source spirit to enable developers to create their own apps, adding potentially limitless potential for the TS-251+.\n\n LED indicators with adjustable brightness controls\n With adjustable 3-stage brightness controls for LED indicators, the TS-251+ provides flexible LED brightness options. Based on the surrounding environment, you can adjust the brightness of all system indicators & also schedule the system to automatically dim the LEDs at certain times when needed.\n\n Expand storage capacity easily\n The TS-251+ supports online capacity expansion for archiving rapidly growing data by connecting a QNAP expansion enclosure. With the QNAP scale-up solution, the raw storage capacity can be expanded on dem&, making the TS-251+ an ideal file center with large storage capacity for storage-intensive business applications.\n\n With the support of QJBOD Express (JBOD enclosures roaming), you can just connect a large capacity QNAP expansion enclosure to the TS-251+, & migrate data to another NAS through the JBOD enclosure without network connectivity.\n\n Energy-saving & eco-friendly\n The TS-251+ utilizes a 22nm CPU & DDR3L RAM which feature low voltage, low power consumption, maintaining high performance in system operations with the benefit of energy-saving. Other eco-friendly designs include S3 sleep mode, HDD standby, scheduled power on/off, hard disk standby mode, & Wake on LAN. QNAP also packs the TS-251+ in an eco-friendly box to minimize the environmental impact.\n\n Easy-to-use NAS management tools\n\n The TS-251+ provides comprehensive system tools to increase management efficiency.\n\n Administrators can turn on the Turbo NAS via LAN to save energy & improve security.\n\n\n The Turbo NAS supports Syslog server that collects logs from various connected devices over the Internet & saves the data, enabling centralized log management with greater efficiency. Feature Feature Value Total installed storage capacity 4 TBStorage drives installed Y Installed storage drive type HDDSupported storage drive types HDD, SSDNumber of storage drives supported 2RAID support Y Hot-swap drive bays Y Supported storage drive interfaces Serial ATA II, Serial ATA IIIStorage drive sizes supported 2.5, 3.5"RAID levels 0, 1, JBODOnline RAID migration Y Online RAID expansion Y Supported file systems FAT32, HFS+, NTFS, ex FAT, ext 3, ext 4 Bad block scan Y Processor frequency 2 GHz Processor family Intel&174; Celeron&174; Processor cores 4 Internal memory 2 GBInternal memory type DDR3 L Memory clock speed 1600 MHz Maximum RAM supported 8 GBMemory slots 2x SODIMMFlash memory 512 MBEthernet LANYWi-Fi N Ethernet LAN data rates 10, 100, 1000 Mbit/s DHCP client YDHCP server Y Jumbo frames support Yi SCSI support Y Wake-on-LAN ready Y Supported network protocols CIFS/SMB, AFP v 3.3, NFS v 3, FTP, FTPS, SFTP, TFTP, HTTP (S), Telnet, SSH, i SCSI, SNMP, SMTP, SMSCLink aggregation Y Dynamic DNS (DDNS)YEthernet LAN (RJ-45) ports 2USB port YUSB 2.0 ports quantity 2USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity 2HDMI ports quantity 1 Chassis type Tower Cooling type Active Product colour Black Number of fans 1 fan (s) Fan diameter 7 cm LED indicators HDD, LAN, Power, Status, USBCable lock slot Y Cable lock slot type Kensington Type NASDevice class Home & Home Office Backup function Y Backup features Cloud, USB drive, i SCSI LUNBuzzer Y Noise level 15.4 d B Snapshot Y Management protocols SNMPSecurity algorithms 256-bit AES, FIPS 140-2, HTTPS, SSHWeb-based management Y Reset button Y On/off switch Y Built-in i Tunes server Y Built-in FTP server Y Browser supported Apple Safari 7+, Google Chrome, Microsoft Internet Explorer 10+, Mozilla Firefox System log YS.M.A.R.T. support Y Share folder 512 Share folder access right management Y Remotely operated Y Backup button Y Universal Plug & Play (UPn P)YOperating system installed QNAP Turbo System Operating system version 4.3 Windows operating systems supported Windows 10, Windows 10 Education, Windows 10 Education x 64, Windows 10 Enterprise, Windows 10 Enterprise x 64, Windows 10 Home, Windows 10 Home x 64, Windows 10 IOT Core, Windows 10 Pro, Windows 10 Pro x 64, Windows 7, Windows 7 Enterprise, Windows 7 Enterprise x 64, Windows 7 Home Basic, Windows 7 Home Basic x 64, Windows 7 Home Premium, Windows 7 Home Premium x 64, Windows 7 Professional, Windows 7 Professional x 64, Windows 7 Starter, Windows 7 Starter x 64, Windows 7 Ultimate, Windows 7 Ultimate x 64, Windows 7 x 64, Windows 8, Windows 8 Enterprise, Windows 8 Enterprise x 64, Windows 8 Pro, Windows 8 Pro x 64, Windows 8 x 64 Linux operating systems supported Y Mac compatibility Y Mac operating systems supported Mac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion, Mac OS X 10.9 Mavericks Server operating systems supported Windows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016 Power supply location External Power supply unit (PSU) capacity 60 WPower consumption (typical)18.09 WPower consumption (sleep)0.57 WPower consumption (HDD standby)10.56 WAC input voltage 100
- 240 VFan voltage 12 VWidth 102 mm Depth 219 mm Height 169 mm Weight 1.28kg Package weight 2.32kg External power adapter Y Cables included AC, LAN (RJ-45) Quick installation guide Y Number of screws 14 Handheld remote control Y Operating temperature (T-T)0
- 40 &176;COperating relative humidity (H-H)5
- 95% Number of simultaneous users 4096 user (s)



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Facing the increasing demand for data storage, sharing & multimedia processing, more & more users are looking for a NAS system with good performance & an affordable price tag. The Intel&174; quad-core TS-251+ provides an uncompromising high-performance scalable storage solution for professional users. Powered by the intelligent QTS 4.2 operating system, the TS-251+ performs as an easy-to-use yet powerful NAS for data backup, file synchronization & sharing, remote access & multimedia applications, & is ideal for users to create a secure private cloud to access their data easily.\n \n
- Centralize your file storage, sharing & backup with excellent performance\n
- Run multiple Windows&174;, Linux&174;, UNIX&174; & Android&132;&162; based virtual machines with the Virtualization Station\n
- Operate multiple isolated Linux&174; systems as well as download containerized apps with Container Station\n
- Enjoy the best audio-visual experience with HDMI output & the free remote control\n
- Transcode Full HD videos on-the-fly or offline*\n
- Stream multimedia files via DLNA&174;, Air Play&174;, Chromecast&132;&162; & Bluetooth&174; with multi-zone multimedia control\n
- Quickly find specific files by real-time, natural search with Qsirch\n
- Scale up to 10 drives with QNAP UX-800P expansion enclosure\n\n Storage Total installed storage capacity 20 TBStorage drives installed Yes Installed storage drive type HDDNumber of storage drives installed 2 Supported storage drive types HDD, SSDNumber of storage drives supported 2 Storage drive interface Serial ATA IIIStorage drive capacity 10000 GBStorage drive size 2.5/3.5" Hot-swap drive bays Yes RAID support Yes Supported file systems FAT32, HFS+, NTFS, ext 3, ext 4RAID levels 0, 1 Processor Processor boost frequency 2.42 GHz Processor frequency 2 GHz Processor family Intel&174; Celeron&174; Processor cores 4 Memory Internal memory type DDR3 L Internal memory 2 GBMaximum RAM supported 8 GBMemory slots 2 Flash memory 512 MBNetworking Ethernet LANYes Ethernet LAN data rates 10, 100, 1000 Mbit/s Wi-Fi No Wake-on-LAN ready Yesi SCSI support Yes DHCP server Yes DHCP client Yes Ports & interfaces USB port Yes USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity 2USB 2.0 ports quantity 2HDMI ports quantity 1 Ethernet LAN (RJ-45) ports 2 Hard drive RAID support Yes Supported file systems FAT32, HFS+, NTFS, ext 3, ext 4RAID levels 0, 1 Design Cooling type Active Fan diameter 7 cm Cable lock slot type Kensington Product colour Black Number of fans 1 fan (s)LED indicators Yes Chassis type Tower Cable lock slot Yes Technical details Type NASDevice class Home & Home Office Backup function Yes Product colour Black Multilingual support Yes LED indicators Yes Chassis type Tower Buzzer Yes Number of fans 1 fan (s) Performance Built-in FTP server Yes Type NASDevice class Home & Home Office Backup function Yes On/off switch Yes Web-based management Yes Reset button Yes Operating system version 4.2 Operating system installed QNAP Turbo System Multilingual support Yes Buzzer Yes Access Control List (ACL) Yes Cooling Cooling type Active Fan diameter 7 cm Number of fans 1 fan (s) Security Cable lock slot type Kensington Cable lock slot Yes Access Control List (ACL) Yes Software Operating system version 4.2 Operating system installed QNAP Turbo System Management features On/off switch Yes Web-based management Yes Reset button Yes Power Power supply location External Power supply unit (PSU) capacity 60 WAC input voltage 100/240 VWeight & dimensions Width 102 mm Depth 225 mm Height 168.8 mm Packaging content Quick installation guide Yes Cables included AC, LAN (RJ-45) Operational conditions Operating temperature (T-T)0
- 40 &176;COperating relative humidity (H-H)5
- 95% Packaging data Cables included AC, LAN (RJ-45)\n\n\n\n









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Facing the increasing demand for data storage, sharing & multimedia processing, more & more users are looking for a NAS system with good performance & an affordable price tag. The Intel&174; quad-core TS-251+ provides an uncompromising high-performance scalable storage solution for professional users. Powered by the intelligent QTS 4.2 operating system, the TS-251+ performs as an easy-to-use yet powerful NAS for data backup, file synchronization & sharing, remote access & multimedia applications, & is ideal for users to create a secure private cloud to access their data easily.\n\n- Centralize your file storage, sharing & backup with excellent performance\n- Run multiple Windows&174;, Linux&174;, UNIX&174; & Android&132;&162; based virtual machines with the Virtualization Station\n- Operate multiple isolated Linux&174; systems as well as download containerized apps with Container Station\n- Enjoy the best audio-visual experience with HDMI output & the free remote control\n- Transcode Full HD videos on-the-fly or offline\n- Stream multimedia files via DLNA&174;, Air Play&174;, Chromecast&132;&162; & Bluetooth&174; with multi-zone multimedia control\n- Quickly find specific files by real-time, natural search with Qsirch\n- Scale up to 10 drives with QNAP UX-800P expansion enclosure\n\n Quad-core 64-bit Intel&174; Celeron&174; CPU for exceptional performance\n The TS-251+ is powered by a 64-bit Intel&174; Celeron&174; quad-core 2.0 G Hz processor & has 2GB/8GB energy-efficient DDR3L RAM (upgradable to 8GB) & dual Gigabit LAN ports, delivering up to 225 MB/s read & write speeds with port trunking mode. The TS-251+ can also automatically increase the processor's clock rate from 2.0 G Hz to 2.42 G Hz when needed for CPU-intensive tasks. The TS-251+ supports AES 256-bit volume & folder encryption with transfer speeds of up to 205 MB/s, boosting system performance & security while ensuring the safety of sensitive personal data stored in the TS-251+.\n\n QTS 4.2
- Simple & efficient\n Thanks to the intuitive user interface of QTS 4.2, your NAS experience is smarter, smoother & spectacular. Its modern flat design streamlines loading times, & the intelligent desktop means that you can quickly find desired functions, create desktop shortcuts or group shortcuts, monitor important system information on a real-time basis, & open multiple application windows to run multiple tasks concurrently, bringing greater operating efficiency. QTS breaks the barriers of devices, platforms & geography to bring optimized cloud experiences to you, & incorporates more advanced features including volume/LUN snapshot, remote connection to public cloud services in File Station, multi-zone multimedia system, & more.\n\n Run additional operating systems on the TS-251+\n The Virtualization Station transforms the TS-251+ into a 2-in-a-box NAS that can function as an all-in-one NAS & a virtualization platform that supports multiple operating systems, fast VM creation, VM backup & restoration, VM import/export, snapshot, Device Management for centrally managing VM, & enables desktop operations on web browsers. With the easy-to-use interface, you can centrally manage all of the VMs created on the TS-251+ with minimal effort. You can also download VMs on demand from online VM markets & import them to the TS-251+ without any complex procedures.\n\n Container Station " LXC & Docker&174; Containers inclusive\n QNAP Container Station exclusively integrates LXC & Docker&174; lightweight virtualization technologies, allowing you to operate multiple isolated Linux&174; systems on the TS-251+ as well as download apps from the built-in Docker Hub&174; Registry. It supports container import/export & permission settings, & features an informative dashboard & flexible user interface for you to manage multiple containers. You can experience the amazing Container Station & enjoy the playground of virtual containers with the TS-251+. Container Station also supports Online Document app, which means that you can directly view, edit & store files of various types anytime on your NAS, including Office documents, images & text files.\n\n Real-time & offline video transcoding\n The TS-251+ delivers superior real-time video transcoding (up to 4K H.264) to convert your videos to formats that can be smoothly played on PCs, mobile devices & Smart TVs. It allows for multiple devices to simultaneously view different videos stored on the TS-251+ with on-the-fly hardware accelerated transcoding, saving your time in converting videos to different formats for different devices.\n\n With the benefits of offline transcoding, if you can only connect to an Internet connection with limited/restricted bandwidth, you can still enjoy smooth videos via File Station, Video Station, or the Qfile app by selecting a pre-rendered lower-resolution video, saving system resources of the TS-251+ for other applications. The TS-251+ also means that you can set a dedicated folder for automatic video transcoding.\n\n Enjoy media freely with multi-zone multimedia control\n Use your TS-251+ as a multi-zone multimedia system to fill every corner of your house with your choice of media. You can centrally manage & stream photos, music & videos from the TS-251+ to different rooms from a single device using Bluetooth&174;& USB (Universal Serial Bus) devices connected to the TS-251+ (for music streaming only), HDMI, DLNA&174;, Apple TV&174; & Chromecast&132;&162;*. Every room member in different zones can enjoy the convenience & simplicity for media playback & multimedia storage.\n\n Alternatively, to enjoy multimedia yourself, you can choose DLNA-compatible devices, use the Qfile app on an i OS&174; device to browse videos/photos & play on the TV via Apple TV&174;, or transform the TS-251+ into a powerful streaming machine with DLNA&174;, Roku&174;, Amazon&174; Fire TV, & Google TV&132;&162; support with the support of Plex Media Server.\n\n Qsirch " A smarter, faster way to search\n Quickly & easily find documents, photos, videos, & music with Qsirch, QNAP's new built-in NAS search application lets you find what you need by real-time, natural search. Simply type in as much as you know about what you are trying to find, including parts of the file name or even words/phrases in the document, & Qsirch will display a list of matches, complete with thumbnails, as you type. Qsirch even remembers your search history so you can quickly navigate to files you've previously searched for. Qsirch is a huge productivity boost that greatly reduces the amount of time spent looking for files on the NAS so you can focus on other tasks.\n\n Cross-platform file sharing, centralized data storage\n The TS-251+ supports SMB/CIFS, NFS, & AFP protocols for file sharing across Windows&174;, Mac&174; & Linux&174;/UNIX&174;. Data, logs & ISO image of CDs & DVDs can be centrally stored in the TS-251+ & protected by an integrated antivirus solution.\n\n File Station integrated with cloud services\n The web-based File Station enables you to easily upload, download, & manage files on your TS-251+ wherever there is an internet connection. Supporting file extraction, folder creation, & smart search for files & folders, the File Station also means that you can easily share files with colleagues & friends via unique URLs, email, & a shared space. What's even better, you can also directly browse & transfer files between the TS-251+ & public cloud services like Google Drive&132;&162;, Dropbox&174;, Microsoft&174; One Drive, Box&174;, Yandex&174; Disk & Amazon&174; Cloud Drive through File Station, & view files with Office Online & Google Docs&132;&162; or directly open them with a Google Chrome&132;&162; office extension.\n\n Well-rounded backup solutions to secure data\n QNAP Net Bak Replicator supports real-time & scheduled data backup on Windows including Outlook email archiving. Apple Time Machine&174; is also supported to provide Mac&174; OS X users with a solution to effortlessly back up data to the TS-251+. The front panel USB (Universal Serial Bus) 3.0 port on the TS-251+ features a one-touch-copy function for you to instantly back up data on external drives to the TS-251+ with just one click, or alternatively to back up data from the TS-251+ to external drives. A wide range of third-party backup software such as Acronis&174; True Image & Symantec&174; Backup Exec are also supported.\n\n Disaster recovery solutions bring peace of mind\n The TS-251+ offers various data recovery options. RTRR (Real-Time Remote Replication) supports real time & scheduled data backup to remote QNAP NAS or FTP servers & synchronizes files to remote folders from local folders with better backup efficiency. You can enjoy backup versioning to preserve a certain amount of versions, with options of simple versioning to schedule how many versions should be retained & for how long, or smart versioning with a rotation scheme that automatically replaces earlier backup versions. The TS-251+ also supports rsync protocol to back up data to remote servers on a scheduled basis. Data can also be backed up to & restored from a range of cloud storage services, including Amazon&174; S3, Amazon&174; Glacier, Microsoft&174; Azure&132;&162;, Elephant Drive&174;, Dropbox&174;, Google Drive&132;&162;, Google Cloud Storage&132;&162;, & more.\n\n Volume & LUN snapshot simplifies restoration\n Not limited to high-end models, the TS-251+ brings the highly-anticipated snapshot function for your flexible usage.QTS Storage Manager adds an easy-to-use web-based snapshot tool for you to easily back up & restore data on the TS-251+ back to any point of time to prevent loss of important data. You can take up to 256 snapshots per volume or LUN, efficiently replicate volume/LUN snapshots to remote servers by copying only the changes made, & quickly clone a volume /LUN snapshot as a local volume without interrupting the current system operation. You can even set up the system to automatically take a snapshot of the volume before backup via RTRR/rsync, even when the file is opened.\n\n Comprehensive security options\n In open network environments, data on the connected devices may be exposed in a potential hack. The TS-251+ provides numerous security options, such as 2-step verification, encrypted access, IP blocking, & more. Administrators can also control the access rights of each user to different folders, preventing unauthorized access to important files. The TS-251+ is validated with military-level FIPS 140-2 AES 256-bit encryption, preventing sensitive data from unauthorized access & breach even if the hard drives or the entire system were stolen.\n\n Secure access with VPN Server & VPN Client\n The TS-251+ can be a VPN server with L2TP/IPsec, Open VPN, & PPTP support, allowing you to securely access data shared within the private local network. The TS-251+ also supports VPN Client for PPTP & Open VPN to protect your privacy during data transmission.\n\n File synchronization across devices & clouds\n Qsync utility turns your TS-251+ into a safe, large-capacity data center for file synchronization. Any file uploaded to the TS-251+ will be made available for all linked devices, such as computers, laptops or mobile devices. Qsync is especially useful for frequent travelers to manage files & always have the most up-to-date files on different devices. Qsync provides multiple ways of file synchronization & group file sharing, greatly enhancing the flexibility of team projects & collaboration. It also supports centralized configuration, & means that you can remotely erase the Qsync folder on a lost device to avoid data breaches, & even restore it after you have retrieved the device. You can also install the Cloud Drive Sync app from QTS App Center to easily sync files with Google Drive&132;&162; & Dropbox&174; cloud storage.\n\n Comprehensive surveillance solution providing 24/7 security\n The TS-251+'s Surveillance Station offers a professional surveillance solution with a user-friendly management interface, a wide range of over 3, 000 compatible IP camera models, & expandable IP camera channel licenses. It supports real-time monitoring, video & audio recording & playback with a wide range of customizable settings. You can also install the Vmobile app on your i OS&174; or Android&132;&162; devices to manage the monitoring of cameras anytime, anywhere, to safeguard your office environment, or install the Vcam mobile app to turn your device into a network camera to instantly record to your TS-251+. The TS-251+ offers 2 free IP camera channels & you can expand up to 40 channels by purchasing additional licenses.\n\n Access & enjoy with your mobile devices\n The TS-251+ is your private cloud storage that virtually enlarges the capacity of your smart mobile devices. Qfile means that you can access, upload, download, manage, & share stored files easily as if you are carrying tons of files in your pocket. If Qfile is installed on an i OS&174; device, users can also browse videos & photos stored on the TS-251+ & play on a TV via Apple&174; TV. Qmanager lets you monitor & manage the TS-251+ remotely & efficiently without turning on your PC. You can take & share digital notes with Qnotes, & enjoy & share music, photos & videos on the TS-251+ anywhere & anytime with Qmusic, Qphoto & Qvideo apps.\n\n Install-on-demand apps to extend NAS functionality\n The TS-251+ has a built-in App Center that provides various install-on-demand apps developed by QNAP & third-party developers, including tools for backup/sync, business, content management, communications, download, entertainment, & much more. It is also a centralized location for managing & updating installed apps. In addition, QNAP's development platform embraces the open-source spirit to enable developers to create their own apps, adding potentially limitless potential for the TS-251+.\n\n LED indicators with adjustable brightness controls\n With adjustable 3-stage brightness controls for LED indicators, the TS-251+ provides flexible LED brightness options. Based on the surrounding environment, you can adjust the brightness of all system indicators & also schedule the system to automatically dim the LEDs at certain times when needed.\n\n Expand storage capacity easily\n The TS-251+ supports online capacity expansion for archiving rapidly growing data by connecting a QNAP expansion enclosure. With the QNAP scale-up solution, the raw storage capacity can be expanded on dem&, making the TS-251+ an ideal file center with large storage capacity for storage-intensive business applications.\n\n With the support of QJBOD Express (JBOD enclosures roaming), you can just connect a large capacity QNAP expansion enclosure to the TS-251+, & migrate data to another NAS through the JBOD enclosure without network connectivity.\n\n Energy-saving & eco-friendly\n The TS-251+ utilizes a 22nm CPU & DDR3L RAM which feature low voltage, low power consumption, maintaining high performance in system operations with the benefit of energy-saving. Other eco-friendly designs include S3 sleep mode, HDD standby, scheduled power on/off, hard disk standby mode, & Wake on LAN. QNAP also packs the TS-251+ in an eco-friendly box to minimize the environmental impact.\n\n Easy-to-use NAS management tools\n\n The TS-251+ provides comprehensive system tools to increase management efficiency.\n\n Administrators can turn on the Turbo NAS via LAN to save energy & improve security.\n\n\n The Turbo NAS supports Syslog server that collects logs from various connected devices over the Internet & saves the data, enabling centralized log management with greater efficiency. Feature Feature Value Total installed storage capacity 2 TBStorage drives installed Y Installed storage drive type HDDSupported storage drive types HDD, SSDNumber of storage drives supported 2RAID support Y Hot-swap drive bays Y Supported storage drive interfaces Serial ATA II, Serial ATA IIIStorage drive sizes supported 2.5, 3.5"RAID levels 0, 1, JBODOnline RAID migration Y Online RAID expansion Y Supported file systems FAT32, HFS+, NTFS, ex FAT, ext 3, ext 4 Bad block scan Y Processor frequency 2 GHz Processor family Intel&174; Celeron&174; Processor cores 4 Internal memory 2 GBInternal memory type DDR3 L Memory clock speed 1600 MHz Maximum RAM supported 8 GBMemory slots 2x SODIMMFlash memory 512 MBEthernet LANYWi-Fi N Ethernet LAN data rates 10, 100, 1000 Mbit/s DHCP client YDHCP server Y Jumbo frames support Yi SCSI support Y Wake-on-LAN ready Y Supported network protocols CIFS/SMB, AFP v 3.3, NFS v 3, FTP, FTPS, SFTP, TFTP, HTTP (S), Telnet, SSH, i SCSI, SNMP, SMTP, SMSCLink aggregation Y Dynamic DNS (DDNS)YEthernet LAN (RJ-45) ports 2USB port YUSB 2.0 ports quantity 2USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity 2HDMI ports quantity 1 Chassis type Tower Cooling type Active Product colour Black Number of fans 1 fan (s) Fan diameter 7 cm LED indicators HDD, LAN, Power, Status, USBCable lock slot Y Cable lock slot type Kensington Type NASDevice class Home & Home Office Backup function Y Backup features Cloud, USB drive, i SCSI LUNBuzzer Y Noise level 15.4 d B Snapshot Y Management protocols SNMPSecurity algorithms 256-bit AES, FIPS 140-2, HTTPS, SSHWeb-based management Y Reset button Y On/off switch Y Built-in i Tunes server Y Built-in FTP server Y Browser supported Apple Safari 7+, Google Chrome, Microsoft Internet Explorer 10+, Mozilla Firefox System log YS.M.A.R.T. support Y Share folder 512 Share folder access right management Y Remotely operated Y Backup button Y Universal Plug & Play (UPn P)YOperating system installed QNAP Turbo System Operating system version 4.3 Windows operating systems supported Windows 10, Windows 10 Education, Windows 10 Education x 64, Windows 10 Enterprise, Windows 10 Enterprise x 64, Windows 10 Home, Windows 10 Home x 64, Windows 10 IOT Core, Windows 10 Pro, Windows 10 Pro x 64, Windows 7, Windows 7 Enterprise, Windows 7 Enterprise x 64, Windows 7 Home Basic, Windows 7 Home Basic x 64, Windows 7 Home Premium, Windows 7 Home Premium x 64, Windows 7 Professional, Windows 7 Professional x 64, Windows 7 Starter, Windows 7 Starter x 64, Windows 7 Ultimate, Windows 7 Ultimate x 64, Windows 7 x 64, Windows 8, Windows 8 Enterprise, Windows 8 Enterprise x 64, Windows 8 Pro, Windows 8 Pro x 64, Windows 8 x 64 Linux operating systems supported Y Mac compatibility Y Mac operating systems supported Mac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion, Mac OS X 10.9 Mavericks Server operating systems supported Windows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016 Power supply location External Power supply unit (PSU) capacity 60 WPower consumption (typical)18.09 WPower consumption (sleep)0.57 WPower consumption (HDD standby)10.56 WAC input voltage 100
- 240 VFan voltage 12 VWidth 102 mm Depth 219 mm Height 169 mm Weight 1.28kg Package weight 2.32kg External power adapter Y Cables included AC, LAN (RJ-45) Quick installation guide Y Number of screws 14 Handheld remote control Y Operating temperature (T-T)0
- 40 &176;COperating relative humidity (H-H)5
- 95% Number of simultaneous users 4096 user (s)



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