Imagine a two-drive software raid STRIPE where the partition table is too damaged to mount the drive. Normally software like DiskWarrior wouldn't mind that, but in this case it can't touch it until the raid is attached, which can't happen if the partition table is bad. (not mounted... simply attached) So catch-22. DW can't fix the partition until it's attached, and it can't attach until it's fixed.
That's why I went the extra mile and run a RAID 5 array. Yes it can get trashed, but it is more likely one of the drives will fail. Put a new drive in the cartridge, plug it into the array and it is automatically rebuilt.
