He probably means on the chipset-delivered PATA ports. nVidia did allow both PATA and SATA drives to combine in their "MediaShield" onboard RAID drivers/firmware. Most new motherboards only support RAID on the SATA im afraid. If you do not need to boot from it, or want to create a RAID1, you can often use Software RAID as an alternative. Even in Windows software RAID0/1 works aright, performance is good.