Thanks Scott and Guy, I appreciate the advice/warning. I can't download it at the moment because the Adaptec site requires the serial number. I have to reboot and get it from the SMOR (Storage Manager on ROM) utility. Then I'll have to see if it's worth the trouble to install and run :) Would you have any suggestions on how I would test the RAID 1 configuration? (Sorry if you already saw the question on the previous posts) Thanks, dianne