I've been very impressed with WHS during beta testing, and I expect it will be a very popular product. See the post referenced below for details if you want to explore.
So, you’ve been eager to try out Windows Home Server…. tried to get into the beta, didn’t manage it. Just stumbled upon WHS recently, and want a piece of it? Now’s your chance. Whilst the early stages of the beta were limited to a set number of managed beta testers, the Windows Home Server team have thrown open the doors to everyone for RC1!