Could be a bit risky following the Buffalo tech support on the actual disks. I wouldn't even suggest trying a firmware update if there is data you need. Those RAID 1 partitions are across all the disks and contain the Buffalo software that runs the NAS. If you choose the Edit components button on the RAID 5, you should see how many of the disks are listed or missing. Don't change anything in there though! Making clones is still the safest way forward, and you may find one or two of the disks have issues during the clone.