The TS-451U, featuring the easy-to-use QTS operating system, is an affordable, reliable & scalable 4-bay rackmount NAS designed for small offices & home offices, assisting in daily operations including file storage, backup, sharing, synchronization, & more. The TS-451U supports SATA 6 Gb/s drives & delivers high performance with persistent throughput, providing a comprehensive storage solution for users to build a private cloud to access their data easily. Manage, share, & back up business data with Real-time Remote Replication (RTRR) Enhanced data security with high-performance AES 256-bit encryption & anti-virus Expand the total raw storage capacity up to 128TB with the economical UX-1200U-RP QNAP expansion enclosure Use the TS-451U with exclusive Qv PC Technology Run multiple Windows/ Linux/UNIX/ Android-based virtual machines with the Virtualization Station Transcode Full HD videos on-the-fly or offline with QNAP’s unique transcoding technology Creatively present your animated content & advertisements with the Signage Station Dual-core 2.41 G Hz processor for higher performance Powered by a 22nm 64-bit dual-core Intel Celeron 2.41 G Hz processor with 1GB energy-efficient DDR3L RAM (upgradable to 8GB), coupled with the support of SATA 6 Gb/s, 2 Gigabit LAN ports & HDMI output, the TS-451U is a powerful NAS that delivers up to 224 MB/s read & write speeds with dual LAN ports. The TS-451U can also automatically increase the processor's clock rate from 2.41 G Hz to 2.58 G Hz when needed for CPU-intensive tasks. The TS-451U’s fast encryption & decryption performance provides transfer speeds of up to 128 MB/s with AES-256 bit volume encryption, boosting system performance & security while ensuring the safety of sensitive data stored in the TS-451U. Thanks to the intuitive user interface of QTS, system operations of the TS-451U are smooth & handy. Its intelligent desktop means that you can find desired functions quickly, 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. SSD cache acceleration The TS-451U supports SSD caching which can greatly boost IOPS performance of storage volumes. It is perfect for improving overall workflow of IOPS-demanding applications such as virtualization. Economical storage expansion with scale-up solution The TS-451U offers a high performance yet affordable storage solution to fulfill the needs of business in archiving rapidly growing data & large files. The TS-451U supports capacity expansion by connecting a QNAP expansion enclosure. With the QNAP scale-up solution, the raw storage capacity can be expanded on dem&, making the TS-451U an ideal file center with a large storage capacity for business data. Monitor & manage multiple NAS with Q'center Q'center turns your TS-451U into a central management system to manage multiple Turbo NAS units. After installing Q'center in QTS App Center, you can use the TS-451U to centrally manage multi-site Turbo NAS for monitoring system logs & managing firmware update & maintenance, & enjoy major benefits including ease-of-use, cost-efficiency, convenience & flexibility. Managing multiple Turbo NAS becomes so easy & efficiently. Cross-platform file sharing, centralized data storage The TS-451U supports SMB/CIFS, NFS, & AFP protocols for file sharing across Windows, Mac, Linux/UNIX networks. Data, logs & ISO images of CDs & DVDs can be centrally stored on the TS-451U & protected by an integrated antivirus solution. The Windows AD & LDAP services enable system administrators to configure user permissions by using an existing Windows AD server, LDAP server or built-in LDAP service. The TS-451U supports SAMBA v 4 & can act as a Windows domain controller to manage privilege settings. Well-rounded backup solutions to secure data QNAP Net Bak Replicator supports real-time & scheduled data backup on Windows including Outlook email archiving. Apple Time Machine is also supported to provide Mac OS X users with a solution to effortlessly back up data to the TS-451U. The USB (Universal Serial Bus) 2.0 port on the front panel of the TS-451U features a one-touch-copy function for you to instantly back up data from external drives to the TS-451U with just one click, or alternatively to back up data from the TS-451U to external drives. A wide range of third-party backup software such as Acronis True Image & Symantec Backup Exec are also supported. Disaster recovery solutions brings peace of mind The TS-451U offers various data recovery options. RTRR (Real-Time Remote Replication) supports real time or scheduled data backup to a remote Turbo NAS or FTP server & synchronizes files to a remote folder from a local folder with better backup efficiency & reduced backup time. The TS-451U also supports rsync protocol to back up data to another remote server on scheduled basis. Data can also be backed up to & restored from a range of cloud storage services, including Amazon S3, Amazon Glacier, Microsoft Azure, Elephant Drive, Dropbox & Google Drive.