My primary data drive failed, crashed, however it was being mirrored. My understanding is that if the primary fails, then the mirrored drive would pick up and run so that I could access data. THat did not happen. I have 4 drives in my system. Scsi ID #1 is O/S drive C, SCSI #2 is data drive # 1 (unmirrored), Drive 3 is data files (crashed) and Drive 4 mirrored drice 3. How do I make O?S recognize & use data stored on Drive 4?