I had a drive failure on a PR4100 running 4-6TB Red drives Raid 5, replaced the drive in kind, the NAS started to rebuild automatically then the replacement drive failed in 5 days. Shut the NAS down. Received a replacement drive, added it to the NAS and restarted. NAS now sits in standby mode and didn’t rebuild. I checked the raid health and it indicates “No configured volumes” All drives indicate “Good”. How do I get thi back on line hopefully without data loss?? Thanks in advance.
Your WD My Cloud Pro PR4100 most likely hasn’t lost the actual data—the issue is that the RAID 5 configuration or metadata got corrupted after the failed rebuild, which is why it now shows “No configured volumes” even though all drives look healthy. The key thing right now is not to initialize, format, or create a new RAID, as that can overwrite what’s left and make recovery much harder. Make sure all drives are back in their original bay order and check the NAS dashboard for any option to import or recover the volume. If nothing shows up, you can check the RAID status over SSH to see if it can be reassembled without making changes. If that doesn’t work, the practical route is to use something like Stellar Toolkit for Data Recovery to rebuild the RAID virtually and pull the data off, ideally by connecting the drives to a PC and working in read-only or from disk images. Since the rebuild was interrupted by another drive failure, the array is in a bad state, but there’s still a decent chance the data can be recovered if you don’t overwrite anything.
Thankyou, I will give Stellar a shot. Have you used this personally?
