I have a file server running 4 1.5TB disks under Vista, and may get up the nerve to try the Carlton Bale solution. I run a raid 1 array for the system disk in this machine, and a raid 0 array for data files. I experience no detectable speed bonus from the 0 array, which is disappointing to say the least.
On this topic (remotely) do you have any experience with PCIe SATA Raid cards? Are there any issues other than compatability? My Intel planar came with an extra Marvell Raid controller, but I lost a couple of raid arrays on this controller, not due to disk problems, and no longer trust it.