Now I understand the use of Black drives for RAID is not supported, however, I know that my WD1501FASS drives have been working just fine for over a year in a RAID 10. I wish to increase my capacity a bit, and I have two more spaces on my controller. However, the price and availability of the WD1501FASS is scarce, or insanely priced. Would using a WD1502FAEX jumpered to SATAII mode work for my needs? Or should I direct this question to Adaptec? Thanks to anyone who can help.