I have a friend of mine I'm trying to help but don't think there is much we can do. He has a HP Server connected via SCSI to a Dell Power Vault using Power Edge Raid Controller. He had a power outage and upon turning everything back on the LEDs on the drives are all green but the controller has long beeps and shows failed drives when you go into the Raid Bios. There are 12 drives with two arrays of 6 drives. Each array has 3 failed drives. Is there any hope? What's his best options? He tried to rebuild the drives but it errors out.