Hi,
You could try Mirroring the drives on your server. You need to have a second HDD installed on your server, go into disk manager, convert the drives to dynamic and then setup mirroring. Mirroring is RAID Level 1.
Heres a MS details URL you could refer to understand more about mirroring.
http://support.microsoft.com/?kbid=114779
and,
http://www.windowsnetworking.com/kbase/Win...WindowsNT..html
Hoep this is what you are looking for. This also happens to be the easiest way to work out things.
Regards,
Renegade