I am not sure if anyone here knows anything about it or has done it before.
I do have a Silicon Image Raid controller that supports Raid 1 and 0, but according to its manual, its max addressable space for Raid is 144GB.
I have 4 drives now in my system. OS runs on a 72GB UW320 SCSI. A few VM OSes run on another UW320 SCSI drive. The 200GB IDE drive has just data on it.