The TS-853S Pro, featuring the easy-to-use QTS operating system, is a powerful, reliable, secure & scalable NAS solution designed for mission-critical business applications & to meet fast growing data storage needs. The TS-853S Pro supports SATA 6 Gb/s drives & delivers high performance with persistent throughput, providing a comprehensive storage solution for SMBs to build a reliable private cloud. Use the TS-853S Pro as a PC with exclusive Qv PC Technology Manage, share, & back up business data with Real-time Remote Replication (RTRR) NAS & i SCSI-SAN unified storage solution for server virtualization Supports VMware, Citrix, & Microsoft Hyper-V & advanced virtualization features Enhanced data security with high-performance AES 256-bit encryption & anti-virus Run multiple Windows/ Linux-based virtual machines with the Virtualization Station Transcode Full HD videos on-the-fly or offline with QNAP's unique transcoding technology Expand the total raw storage capacity up to 56TB with the economical UX-800P QNAP expansion enclosure High performance Powered by a cutting-edge 22nm quad-core Intel Celeron 2.0 G Hz processor with 4GB energy-efficient DDR3L RAM (upgradable to 8GB), coupled with the support of SATA 6 Gb/s, 4 Gigabit LAN ports & HDMI output, the TS-853S Pro is a powerful NAS that delivers up to 415MB/s read & write speeds. The TS-853S Pro can also automatically increase the processor's clock rate from 2.0 G Hz to 2.41 G Hz when needed for CPU-intensive tasks. The TS-853S Pro's fast encryption & decryption performance provides transfer speeds of up to 70MB/s with AES-256 bit volume encryption, boosting system performance & security while ensuring the safety of sensitive business data stored in the TS-853S Pro. When installed with the latest dual-band 2.4 G Hz/5 G Hz 802.11ac Wi-Fi network card, the TS-853S Pro can offer remarkably high speeds for transferring large amount of files & streaming bandwidth-consuming multimedia.