OK that being said, what would be my best plan of approach? Sell these drives and buy some different ones? Thanks for the info also!The PERC H700 is a RAID controller and doesn't provide a full passthru interface for sg3_utils. You will need to attach the drives to a non-RAID controller (in LSI speak, "IT mode"). This can be a bit of a pain in an Rx10 as the H700 is in a dedicated slot that complains about non-Dell cards, and the backplane cables aren't long enough to reach the regular expansion slot area where you'd temporarily install an IT-mode controller.