Greetings from the Windows Home Server Team
You have been approved to be in the Windows Home Server Beta program.
I just signed up and received notification for beta testing Windows Home Server. Over time, I've had a few server instances running variants of Windows (XP, 2000, 2003) for home file server needs. However, with Home Server, there's a few nice features that make backup and mindless RAID capabilities for machines that participate on the Home Server network.
Microsoft is doing a good job on taking lots of the details out of configuring RAID for the average users. These appliances (one announced by HP) will soon be available to just plug in to the home network and do some simple configuration on your clients (laptops, MCE, Vista, - don't see a linux client but it should work with SAMBA SMB - not confirmed yet).
Link to Windows Home Server Cures Digital Amnesia