Bought these for a job I was going to implement, they never followed through and I was stuck with them. I can register the warranty under your name which gives you 3 years of support/replacement. They are 2 x 1tb drives in a network enclosure/server and can be swapped out. You can configure them for RAID1 and have a ton of different options for use. If you want more than one we can work out a deal $195 OBO-Shipped Thanks TPU!