Oh yeah, Any ATA/66/ATA/100 7200RPM RAID 0 array I would do it. It increases performance in office apps, and other disk apps by 10% at least, often more. RAID 0+1 would be the most ideal RAID configuration, because it mirrors and Stripes, but you need to have 4 Hard Drives, but still only 2 of them count towards the final disk space.