I am using this Network attached server (NAS) from Netgear and like it very much. It has build-in Raid (two 1TB HD in mirror) for instant duplication. Also, I have the NAS automaticly backup important files to a USB dock weekly, which hosts two HD (500GB) alternately with monthly rotations. While one is on the dock for weekly backup, the other is kept in my office, which is 10 miles away from my home. I sleep much better with this setup.