b0ll0xxx Posted June 19, 2019 Share Posted June 19, 2019 So I just added a new WD 10TB HDD to my system and precleared it. After a succesfull preclear my two Seagate 8TB HDD's that were attached via a USB dock and until now working perfectly, had the red x next to them and marked as being emulated. I tried a reboot but no change. I powered down and restarted also without luck. Thinking the dock might be faulty I tried another dock, it didn't recognize the drives at all, marked them as missing. I reattached the original dock after checking that it was working on another computer. On reboot the two drives now had a blue square next to them. Couldn't find much info on this apart from UnRAID thinking two new drives had been added. As I had two parity drives I thought that starting the array would rebuild the two 'new' drives so I did so. UnRAID displayed 'Parity Sync/Data-Rebuild' and a percentage in the status bar so I was optimistic. The notification said that Disks 4 and 5 were not ready and contents were being reconstructed. About 54 hours later, those two drives now appear with a green circle but with the message 'Unmountable: No file system'. I haven't formatted them yet. Have I lost 16TB of data? It seems what UnRAID did is recalculate parity for the other three drives that were still OK, so I might not be able to restore my lost data if it's no longer included on the updated parity drives. What should I be doing now? Any chance of recovering anything? Screenshots taken throughout the process are attached. Running UNRAID 6.4.1 Quote Link to comment
JorgeB Posted June 19, 2019 Share Posted June 19, 2019 Please post the diagnostics: Tools -> Diagnostics Quote Link to comment
b0ll0xxx Posted June 19, 2019 Author Share Posted June 19, 2019 unovo-diagnostics-20190619-1932.zip Quote Link to comment
JorgeB Posted June 19, 2019 Share Posted June 19, 2019 Check filesystem on disks 4 and 5: https://wiki.unraid.net/Check_Disk_Filesystems#Checking_and_fixing_drives_in_the_webGui or https://wiki.unraid.net/Check_Disk_Filesystems#Drives_formatted_with_XFS P.S. using USB array disks is not recommended, both for performance and reliability reasons, they have a tendency to drop out. Quote Link to comment
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