The Buffalo 220 hard drive is great for storing your important files and documents. RAID 1 technology provides security over your information, while the built-in Bit Torrent client allows for simplified file downloading and management. The Linkstation Cloud has a 4TB total capacity for ample storage space, and includes connectivity to your PC and Mac as well as you smartphone and tablet for convenience. Consolidate storage and backup your PC and Mac computers. 4TB total capacity with 2 Drive bays. 2TB with RAID 1. Stream videos and photos to your DLNA/UPnP connected devices. Entry-class Personal cloud lets you access and share your content anytime, anywhere over the Internet. Plug into your router for instant network access. Easy to use with your smartphone or tablet devices. Built-in Bit Torrent client for simplified file downloading and management.