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QNAP TS-251+ Ethernet LAN Tower Black NAS
Facing the increasing demand for data storage, sharing and multimedia processing, more and more users are looking for a NAS system with good performance and 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 and sharing, remote access and multimedia applications, and is ideal for users to create a secure private cloud to access their data easily.\n \n - Centralize your file storage, sharing and backup with excellent performance\n - Run multiple Windows&174;, Linux&174;, UNIX&174; and 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 and the free remote control\n - Transcode Full HD videos on-the-fly or offline\n - Stream multimedia files via DLNA&174;, AirPlay&174;, Chromecast&132;&162; and 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 2.0GHz processor and has 2GB/8GB energy-efficient DDR3L RAM (upgradable to 8GB) and 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 2.0GHz to 2.42GHz 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 and efficient\n Thanks to the intuitive user interface of QTS 4.2, your NAS experience is smarter, smoother and spectacular. Its modern flat design streamlines loading times, and the intelligent desktop allows you to quickly find desired functions, create desktop shortcuts or group shortcuts, monitor important system information on a real-time
basis, and open multiple application windows to run multiple tasks concurrently, bringing greater operating efficiency. QTS breaks the barriers of devices, platforms and geography to bring optimized cloud experiences to you, and incorporates more advanced features including volume/LUN snapshot, remote connection to public cloud services in File Station, multi-zone multimedia system, and 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 and a virtualization platform that supports multiple operating systems, fast VM creation, VM backup & restoration, VM import/export, snapshot, Device Management for centrally managing VM, and 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 and import them to the TS-251+ without any complex procedures.\n \n Container Station " LXC and Docker&174; Containers inclusive\n QNAP Container Station exclusively integrates LXC and 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 and permission settings, and features an informative dashboard and flexible user interface for you to manage multiple containers. You can experience the amazing Container Station and enjoy the
playground of virtual containers with the TS-251+. Container Station also supports Online Document app, which allows you to directly view, edit and store files of various types anytime on your NAS, including Office documents, images and 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 and 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 allows you to 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 and stream photos, music and videos from the TS-251+ to different rooms from a single device using Bluetooth&174;& USB devices connected to the TS-251+ (for music streaming only), HDMI, DLNA&174;, Apple TV&174; and Chromecast&132;&162;*. Every room member in different
zones can enjoy the convenience and simplicity for media playback and multimedia storage.\n \n Alternatively, to enjoy multimedia yourself, you can choose DLNA-compatible devices, use the Qfile app on an iOS&174; device to browse videos/photos and 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, and Google TV&132;&162; support with the support of Plex Media Server.\n \n Qsirch " A smarter, faster way to search\n Quickly and easily find documents, photos, videos, and 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, and 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, and AFP protocols for file sharing across Windows&174;, Mac&174; and Linux&174;/UNIX&174;. Data, logs and ISO image of CDs and DVDs can be centrally stored in the TS-251+ and 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, and manage files on your TS-251+ wherever there is an internet connection. Supporting file extraction, folder creation, and smart search for files and folders, the File Station also allows you to easily share files with colleagues and friends via unique URLs, email, and a shared space. What's even better, you can also directly browse and transfer files between the TS-251+ and public cloud services like Google Drive&132;&162;, Dropbox&174;, Microsoft&174; OneDrive, Box&174;, Yandex&174; Disk and Amazon&174; Cloud Drive through File Station, and view files with Office Online and 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 NetBak Replicator supports
real-time and 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 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 and 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 and scheduled data backup to remote QNAP NAS or FTP servers
and 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 and 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 and restored from a range of cloud storage services, including Amazon&174; S3, Amazon&174; Glacier, Microsoft&174; Azure&132;&162;, ElephantDrive&174;, Dropbox&174;, Google Drive&132;&162;, Google Cloud Storage&132;&162;, and 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 and 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, and 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, and 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 and 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, OpenVPN, and PPTP support, allowing you to securely access data shared within the private local network. The TS-251+ also supports VPN Client for PPTP and OpenVPN to protect your privacy during data transmission.\n \n
File synchronization across devices and 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 and always have the most up-to-date files on different devices. Qsync provides multiple ways of file synchronization and group file sharing, greatly enhancing the flexibility of team projects and collaboration. It also supports centralized configuration, and allows you to remotely erase the Qsync folder on a lost device to avoid data breaches, and 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; and 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, and expandable IP camera channel licenses. It supports real-time monitoring, video & audio recording and playback with a wide range of customizable settings. You can also install the Vmobile app on your iOS&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 and you can expand up to 40 channels by purchasing additional licenses.\n \n Access and 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 allows you to access, upload, download, manage, and share stored files easily as if you are carrying tons of files in your pocket. If Qfile is installed on an iOS&174; device, users can also browse videos & photos stored on the TS-251+ and play on a TV via Apple&174; TV. Qmanager lets you monitor & manage the TS-251+ remotely and efficiently without turning on your PC. You can take and share digital notes with Qnotes, and enjoy and share music, photos and videos on the TS-251+ anywhere and anytime with Qmusic,
Qphoto and 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 and third-party developers, including tools for backup/sync, business, content management, communications, download, entertainment, and 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 and 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 demand, 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+, and 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 and 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, and 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 and improve security.\n \n \n The Turbo NAS supports Syslog server that collects logs from various connected devices over the Internet and saves the data, enabling centralized log management with greater
efficiency.\n\nStorageTotal installed storage capacity20 TBOnline RAID migrationYesOnline RAID expansionYesBad block scanYesStorage drives installedYesInstalled storage drive typeHDDSupported storage drive typesHDD, SSDNumber of storage drives supported2Hot-swap drive baysYesRAID supportYesSupported file systemsFAT32, HFS+, NTFS, exFAT, ext3, ext4RAID levels0, 1, JBODSupported storage drive interfacesSerial ATA II, Serial ATA IIIStorage drive sizes supported2.5, 3.5"ProcessorProcessor frequency2 GHzProcessor familyIntel&174; Celeron&174;Processor cores4MemoryInternal memory typeDDR3LInternal memory2 GBMemory clock speed1600 MHzMaximum RAM supported8 GBMemory slots2x SODIMMFlash memory512 MBNetworkingLink aggregationYesDynamic DNS (DDNS)YesEthernet LANYesEthernet LAN data rates10, 100, 1000
Mbit/sWi-FiNoWake-on-LAN readyYesSupported network protocolsCIFS/SMB, AFP v3.3, NFS v3, FTP, FTPS, SFTP, TFTP, HTTP(S), Telnet, SSH, iSCSI, SNMP, SMTP, SMSCJumbo frames supportYesiSCSI supportYesDHCP serverYesDHCP clientYesPorts & interfacesUSB portYesUSB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity2USB 2.0 ports quantity2HDMI ports quantity1Ethernet LAN (RJ-45) ports2Hard driveRAID supportYesSupported file systemsFAT32, HFS+, NTFS, exFAT, ext3, ext4RAID levels0, 1, JBODDesignCooling typeActiveFan diameter7 cmCable lock slot typeKensingtonProduct colourBlackNumber of fans1 fan(s)LED indicatorsHDD, LAN, Power, Status, USBChassis typeTowerCable lock slotYesTechnical detailsTypeNASDevice classHome & Home OfficeBackup functionYesBackup featuresCloud, USB drive, iSCSI LUNProduct
colourBlackNoise level15.4 dBLED indicatorsHDD, LAN, Power, Status, USBChassis typeTowerBuzzerYesNumber of simultaneous users4096 user(s)Number of fans1 fan(s)PerformanceBuilt-in iTunes serverYesBuilt-in FTP serverYesSystem logYesShare folder access right managementYesShare folder512S.M.A.R.T. supportYesBrowser supportedApple Safari 7+, Google Chrome, Microsoft Internet Explorer 10+, Mozilla FirefoxMac compatibilityYesRemotely operatedYesBackup buttonYesUniversal Plug and Play (UPnP)YesTypeNASDevice classHome & Home OfficeBackup functionYesBackup featuresCloud, USB drive, iSCSI LUNOn/off switchYesWindows operating systems supportedWindows 10, Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10 Enterprise x64, Windows 10 Home, Windows 10 Home x64, Windows 10
IOT Core, Windows 10 Pro, Windows 10 Pro x64, Windows 7, Windows 7 Enterprise, Windows 7 Enterprise x64, Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 Home Premium, Windows 7 Home Premium x64, Windows 7 Professional, Windows 7 Professional x64, Windows 7 Starter, Windows 7 Starter x64, Windows 7 Ultimate, Windows 7 Ultimate x64, Windows 7 x64, Windows 8, Windows 8 Enterprise, Windows 8 Enterprise x64, Windows 8 Pro, Windows 8 Pro x64, Windows 8 x64Server operating systems supportedWindows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016Mac operating systems supportedMac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion, Mac OS X 10.9 MavericksLinux operating systems supportedYesWeb-based managementYesSecurity algorithms256-bit AES,
FIPS 140-2, HTTPS, SSHReset buttonYesOperating system version4.3Operating system installedQNAP Turbo SystemNoise level15.4 dBManagement protocolsSNMPBuzzerYesSnapshotYesCoolingCooling typeActiveFan diameter7 cmFan voltage12 VNumber of fans1 fan(s)SecurityCable lock slot typeKensingtonSecurity algorithms256-bit AES, FIPS 140-2, HTTPS, SSHCable lock slotYesSoftwareMac compatibilityYesWindows operating systems supportedWindows 10, Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10 Enterprise x64, Windows 10 Home, Windows 10 Home x64, Windows 10 IOT Core, Windows 10 Pro, Windows 10 Pro x64, Windows 7, Windows 7 Enterprise, Windows 7 Enterprise x64, Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 Home Premium, Windows 7 Home Premium x64, Windows 7
Professional, Windows 7 Professional x64, Windows 7 Starter, Windows 7 Starter x64, Windows 7 Ultimate, Windows 7 Ultimate x64, Windows 7 x64, Windows 8, Windows 8 Enterprise, Windows 8 Enterprise x64, Windows 8 Pro, Windows 8 Pro x64, Windows 8 x64Server operating systems supportedWindows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016Mac operating systems supportedMac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion, Mac OS X 10.9 MavericksLinux operating systems supportedYesOperating system version4.3Operating system installedQNAP Turbo SystemManagement featuresOn/off switchYesWeb-based managementYesReset buttonYesManagement protocolsSNMPPowerPower consumption (HDD standby)10.56 WPower supply locationExternalPower supply unit (PSU)
capacity60 WFan voltage12 VAC input voltage100 - 240 VPower consumption (typical)18.09 WPower consumption (sleep)0.57 WExternal power adapterYesWeight & dimensionsWidth102 mmDepth219 mmHeight169 mmWeight1.28 kgPackage weight2.32 kgPackaging contentNumber of screws14Handheld remote controlYesQuick installation guideYesExternal power adapterYesCables includedAC, LAN (RJ-45)System requirementsWindows operating systems supportedWindows 10, Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10 Enterprise x64, Windows 10 Home, Windows 10 Home x64, Windows 10 IOT Core, Windows 10 Pro, Windows 10 Pro x64, Windows 7, Windows 7 Enterprise, Windows 7 Enterprise x64, Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 Home Premium, Windows 7 Home Premium x64, Windows
7 Professional, Windows 7 Professional x64, Windows 7 Starter, Windows 7 Starter x64, Windows 7 Ultimate, Windows 7 Ultimate x64, Windows 7 x64, Windows 8, Windows 8 Enterprise, Windows 8 Enterprise x64, Windows 8 Pro, Windows 8 Pro x64, Windows 8 x64Server operating systems supportedWindows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016Mac operating systems supportedMac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion, Mac OS X 10.9 MavericksLinux operating systems supportedYesOperational conditionsOperating temperature (T-T)0 - 40 &176;COperating relative humidity (H-H)5 - 95%Packaging dataPackage weight2.32 kgCables includedAC, LAN (RJ-45)Other featuresNumber of simultaneous users4096
user(s)\n\n\n\nhttp://objects.icecat.biz/objects/mmo_38324872_1528663688_956_22088.pdf
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 and the free remote control\n - Transcode Full HD videos on-the-fly or offline\n - Stream multimedia files via DLNA&174;, AirPlay&174;, Chromecast&132;&162; and 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 2.0GHz processor and has 2GB/8GB energy-efficient DDR3L RAM (upgradable to 8GB) and 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 2.0GHz to 2.42GHz 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 and efficient\n Thanks to the intuitive user interface of QTS 4.2, your NAS experience is smarter, smoother and spectacular. Its modern flat design streamlines loading times, and the intelligent desktop allows you to quickly find desired functions, create desktop shortcuts or group shortcuts, monitor important system information on a real-time
basis, and open multiple application windows to run multiple tasks concurrently, bringing greater operating efficiency. QTS breaks the barriers of devices, platforms and geography to bring optimized cloud experiences to you, and incorporates more advanced features including volume/LUN snapshot, remote connection to public cloud services in File Station, multi-zone multimedia system, and 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 and a virtualization platform that supports multiple operating systems, fast VM creation, VM backup & restoration, VM import/export, snapshot, Device Management for centrally managing VM, and 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 and import them to the TS-251+ without any complex procedures.\n \n Container Station " LXC and Docker&174; Containers inclusive\n QNAP Container Station exclusively integrates LXC and 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 and permission settings, and features an informative dashboard and flexible user interface for you to manage multiple containers. You can experience the amazing Container Station and enjoy the
playground of virtual containers with the TS-251+. Container Station also supports Online Document app, which allows you to directly view, edit and store files of various types anytime on your NAS, including Office documents, images and 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 and 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 allows you to 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 and stream photos, music and videos from the TS-251+ to different rooms from a single device using Bluetooth&174;& USB devices connected to the TS-251+ (for music streaming only), HDMI, DLNA&174;, Apple TV&174; and Chromecast&132;&162;*. Every room member in different
zones can enjoy the convenience and simplicity for media playback and multimedia storage.\n \n Alternatively, to enjoy multimedia yourself, you can choose DLNA-compatible devices, use the Qfile app on an iOS&174; device to browse videos/photos and 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, and Google TV&132;&162; support with the support of Plex Media Server.\n \n Qsirch " A smarter, faster way to search\n Quickly and easily find documents, photos, videos, and 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, and 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, and AFP protocols for file sharing across Windows&174;, Mac&174; and Linux&174;/UNIX&174;. Data, logs and ISO image of CDs and DVDs can be centrally stored in the TS-251+ and 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, and manage files on your TS-251+ wherever there is an internet connection. Supporting file extraction, folder creation, and smart search for files and folders, the File Station also allows you to easily share files with colleagues and friends via unique URLs, email, and a shared space. What's even better, you can also directly browse and transfer files between the TS-251+ and public cloud services like Google Drive&132;&162;, Dropbox&174;, Microsoft&174; OneDrive, Box&174;, Yandex&174; Disk and Amazon&174; Cloud Drive through File Station, and view files with Office Online and 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 NetBak Replicator supports
real-time and 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 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 and 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 and scheduled data backup to remote QNAP NAS or FTP servers
and 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 and 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 and restored from a range of cloud storage services, including Amazon&174; S3, Amazon&174; Glacier, Microsoft&174; Azure&132;&162;, ElephantDrive&174;, Dropbox&174;, Google Drive&132;&162;, Google Cloud Storage&132;&162;, and 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 and 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, and 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, and 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 and 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, OpenVPN, and PPTP support, allowing you to securely access data shared within the private local network. The TS-251+ also supports VPN Client for PPTP and OpenVPN to protect your privacy during data transmission.\n \n
File synchronization across devices and 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 and always have the most up-to-date files on different devices. Qsync provides multiple ways of file synchronization and group file sharing, greatly enhancing the flexibility of team projects and collaboration. It also supports centralized configuration, and allows you to remotely erase the Qsync folder on a lost device to avoid data breaches, and 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; and 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, and expandable IP camera channel licenses. It supports real-time monitoring, video & audio recording and playback with a wide range of customizable settings. You can also install the Vmobile app on your iOS&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 and you can expand up to 40 channels by purchasing additional licenses.\n \n Access and 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 allows you to access, upload, download, manage, and share stored files easily as if you are carrying tons of files in your pocket. If Qfile is installed on an iOS&174; device, users can also browse videos & photos stored on the TS-251+ and play on a TV via Apple&174; TV. Qmanager lets you monitor & manage the TS-251+ remotely and efficiently without turning on your PC. You can take and share digital notes with Qnotes, and enjoy and share music, photos and videos on the TS-251+ anywhere and anytime with Qmusic,
Qphoto and 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 and third-party developers, including tools for backup/sync, business, content management, communications, download, entertainment, and 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 and 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 demand, 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+, and 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 and 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, and 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 and improve security.\n \n \n The Turbo NAS supports Syslog server that collects logs from various connected devices over the Internet and saves the data, enabling centralized log management with greater
efficiency.\n\nStorageTotal installed storage capacity20 TBOnline RAID migrationYesOnline RAID expansionYesBad block scanYesStorage drives installedYesInstalled storage drive typeHDDSupported storage drive typesHDD, SSDNumber of storage drives supported2Hot-swap drive baysYesRAID supportYesSupported file systemsFAT32, HFS+, NTFS, exFAT, ext3, ext4RAID levels0, 1, JBODSupported storage drive interfacesSerial ATA II, Serial ATA IIIStorage drive sizes supported2.5, 3.5"ProcessorProcessor frequency2 GHzProcessor familyIntel&174; Celeron&174;Processor cores4MemoryInternal memory typeDDR3LInternal memory2 GBMemory clock speed1600 MHzMaximum RAM supported8 GBMemory slots2x SODIMMFlash memory512 MBNetworkingLink aggregationYesDynamic DNS (DDNS)YesEthernet LANYesEthernet LAN data rates10, 100, 1000
Mbit/sWi-FiNoWake-on-LAN readyYesSupported network protocolsCIFS/SMB, AFP v3.3, NFS v3, FTP, FTPS, SFTP, TFTP, HTTP(S), Telnet, SSH, iSCSI, SNMP, SMTP, SMSCJumbo frames supportYesiSCSI supportYesDHCP serverYesDHCP clientYesPorts & interfacesUSB portYesUSB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity2USB 2.0 ports quantity2HDMI ports quantity1Ethernet LAN (RJ-45) ports2Hard driveRAID supportYesSupported file systemsFAT32, HFS+, NTFS, exFAT, ext3, ext4RAID levels0, 1, JBODDesignCooling typeActiveFan diameter7 cmCable lock slot typeKensingtonProduct colourBlackNumber of fans1 fan(s)LED indicatorsHDD, LAN, Power, Status, USBChassis typeTowerCable lock slotYesTechnical detailsTypeNASDevice classHome & Home OfficeBackup functionYesBackup featuresCloud, USB drive, iSCSI LUNProduct
colourBlackNoise level15.4 dBLED indicatorsHDD, LAN, Power, Status, USBChassis typeTowerBuzzerYesNumber of simultaneous users4096 user(s)Number of fans1 fan(s)PerformanceBuilt-in iTunes serverYesBuilt-in FTP serverYesSystem logYesShare folder access right managementYesShare folder512S.M.A.R.T. supportYesBrowser supportedApple Safari 7+, Google Chrome, Microsoft Internet Explorer 10+, Mozilla FirefoxMac compatibilityYesRemotely operatedYesBackup buttonYesUniversal Plug and Play (UPnP)YesTypeNASDevice classHome & Home OfficeBackup functionYesBackup featuresCloud, USB drive, iSCSI LUNOn/off switchYesWindows operating systems supportedWindows 10, Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10 Enterprise x64, Windows 10 Home, Windows 10 Home x64, Windows 10
IOT Core, Windows 10 Pro, Windows 10 Pro x64, Windows 7, Windows 7 Enterprise, Windows 7 Enterprise x64, Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 Home Premium, Windows 7 Home Premium x64, Windows 7 Professional, Windows 7 Professional x64, Windows 7 Starter, Windows 7 Starter x64, Windows 7 Ultimate, Windows 7 Ultimate x64, Windows 7 x64, Windows 8, Windows 8 Enterprise, Windows 8 Enterprise x64, Windows 8 Pro, Windows 8 Pro x64, Windows 8 x64Server operating systems supportedWindows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016Mac operating systems supportedMac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion, Mac OS X 10.9 MavericksLinux operating systems supportedYesWeb-based managementYesSecurity algorithms256-bit AES,
FIPS 140-2, HTTPS, SSHReset buttonYesOperating system version4.3Operating system installedQNAP Turbo SystemNoise level15.4 dBManagement protocolsSNMPBuzzerYesSnapshotYesCoolingCooling typeActiveFan diameter7 cmFan voltage12 VNumber of fans1 fan(s)SecurityCable lock slot typeKensingtonSecurity algorithms256-bit AES, FIPS 140-2, HTTPS, SSHCable lock slotYesSoftwareMac compatibilityYesWindows operating systems supportedWindows 10, Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10 Enterprise x64, Windows 10 Home, Windows 10 Home x64, Windows 10 IOT Core, Windows 10 Pro, Windows 10 Pro x64, Windows 7, Windows 7 Enterprise, Windows 7 Enterprise x64, Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 Home Premium, Windows 7 Home Premium x64, Windows 7
Professional, Windows 7 Professional x64, Windows 7 Starter, Windows 7 Starter x64, Windows 7 Ultimate, Windows 7 Ultimate x64, Windows 7 x64, Windows 8, Windows 8 Enterprise, Windows 8 Enterprise x64, Windows 8 Pro, Windows 8 Pro x64, Windows 8 x64Server operating systems supportedWindows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016Mac operating systems supportedMac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion, Mac OS X 10.9 MavericksLinux operating systems supportedYesOperating system version4.3Operating system installedQNAP Turbo SystemManagement featuresOn/off switchYesWeb-based managementYesReset buttonYesManagement protocolsSNMPPowerPower consumption (HDD standby)10.56 WPower supply locationExternalPower supply unit (PSU)
capacity60 WFan voltage12 VAC input voltage100 - 240 VPower consumption (typical)18.09 WPower consumption (sleep)0.57 WExternal power adapterYesWeight & dimensionsWidth102 mmDepth219 mmHeight169 mmWeight1.28 kgPackage weight2.32 kgPackaging contentNumber of screws14Handheld remote controlYesQuick installation guideYesExternal power adapterYesCables includedAC, LAN (RJ-45)System requirementsWindows operating systems supportedWindows 10, Windows 10 Education, Windows 10 Education x64, Windows 10 Enterprise, Windows 10 Enterprise x64, Windows 10 Home, Windows 10 Home x64, Windows 10 IOT Core, Windows 10 Pro, Windows 10 Pro x64, Windows 7, Windows 7 Enterprise, Windows 7 Enterprise x64, Windows 7 Home Basic, Windows 7 Home Basic x64, Windows 7 Home Premium, Windows 7 Home Premium x64, Windows
7 Professional, Windows 7 Professional x64, Windows 7 Starter, Windows 7 Starter x64, Windows 7 Ultimate, Windows 7 Ultimate x64, Windows 7 x64, Windows 8, Windows 8 Enterprise, Windows 8 Enterprise x64, Windows 8 Pro, Windows 8 Pro x64, Windows 8 x64Server operating systems supportedWindows Server 2003, Windows Server 2008 R2, Windows Server 2012, Windows Server 2012 R2, Windows Server 2016Mac operating systems supportedMac OS X 10.7 Lion, Mac OS X 10.8 Mountain Lion, Mac OS X 10.9 MavericksLinux operating systems supportedYesOperational conditionsOperating temperature (T-T)0 - 40 &176;COperating relative humidity (H-H)5 - 95%Packaging dataPackage weight2.32 kgCables includedAC, LAN (RJ-45)Other featuresNumber of simultaneous users4096
user(s)\n\n\n\nhttp://objects.icecat.biz/objects/mmo_38324872_1528663688_956_22088.pdf
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