The TS-251 provides a high performance and; high capacity storage solution for SOHO and; home workgroup & SMB users. Powered by the advanced QTS operating system the TS-251 performs as an easy-to-use yet powerful NAS for data backup file synchronization remote access home entertainment & is ideal for users to build a personal cloud to access their data easily. Transcode Full HD videos on-the-fly or offline* Play 1080p videos with 7.1 channel surround sound pass-through via HDMI output Create a personal cloud & stream your multimedia library via DLNA Air Play & Plex Centralize your file storage sharing & backup Run a virtual machine & extend the functionality of the NAS with an integrated virtualization solution Expand the total raw storage capacity up to 60TB (with maximum 10 hard drives) with the economical QNAP expansion enclosure UX-800P QNAPs my QNAPcloud provides an always-connected infrastructure for business & home users to build their private or personal cloud with ease. Through any web browser or the free mobile app the TS-251 becomes your personal cloud so you are always connected to your data. Take advantage of the my QNAPcloud service which means that you can remotely access your TS-251 wherever you are. Instantly stream or share your multimedia contents & share them with your friends..