Buffalo LinkStation 220 8TB Private Cloud Storage NAS with Hard Drives Included Entry-class Personal cloud: access and share your content anytime, anywhere over the Internet Easy to set up: Plug into your router for instant network access Consolidate storage and backup your PC & Mac computers Stream videos and photos to your DLNA/UPnP connected devices Built-in Bit Torrent client for simplified file downloading and management Easy to use with your smartphone or tablet devices - no computer needed 8TB total capacity  2 Drive bays, Total usable capacity dependent on RAID configuration