Just saw lifespeed's post - I've been messing with a couple of these controllers. I have 2 x 80GB drives and 6 x 1TB drives (all Seagate SATA II) on a RocketRaid 3520 controller, Asus P5BV-C mobo, E6850 CPU, 2GB RAM.
The 80GB drives are my boot volume, mirrored (RAID 1) and the rest are in a...