You'll have to chat with the company that supports that system. What I don't understand is how so much storage could be fielded without a backup. I have run into folk that think that RAID will eliminate the need for backup but those folk usually learn after an event like you experienced.

The old Adaptec RAID had manuals about how to recover and I didn't find material to read about the products you listed.

Do you have any links to share?

The better systems such as Adaptec and Drobo blink an LED code or you look at the software to tell what drive to replace and it reports it is rebuilding or needs a new drive.

Bob