August 5, 2025Aug 5 Hello everyone,I'm looking for some help with an issue on my Unraid server. This morning, I found that Disk 1 has been disabled from my array.I'm not sure why this has happened. I have run a full SMART extended test on the drive, and it came back with no errors reported.I'm unsure what my next steps should be to safely resolve this and bring the disk back online. Could someone please advise me on the proper procedure?I have attached the diagnostics file from my server to this post for you to review.Thank you in advance for your help!Best regards, FANAXING 2TBsmart-20250801-0732.zip noemi-smart-20250805-1609.zip
August 5, 2025Aug 5 Community Expert Diags are after rebooting, so we can't see what happened, and the SMART test was only the short one, which is not very useful. Recommend running an extended test, and if it passes, and since the emulated disk is mounting and assuming contents look correct, you can rebuild on top:https://docs.unraid.net/unraid-os/manual/storage-management#rebuilding-a-drive-onto-itselfIt may be worth replacing the cable before the rebuild to rule that out.
August 7, 2025Aug 7 Community Expert If the emulated disk is still mounting and assuming contents look correct, you can rebuild on top:https://docs.unraid.net/unraid-os/manual/storage-management#rebuilding-a-drive-onto-itselfIt may be worth replacing the cable before the rebuild to rule that out.
August 7, 2025Aug 7 Author Thank you very much now is the reconstruction process. I'll write how it ends. I have another problem with the second server Matrix shows "Macierz has 2 SMART errors", while the smart results for all drives (1+3) are correct Included in the smart test files. Please advise how to correct errors maria-diagnostics-20250807-1441.zip maria-smart-20250807-1502.zip maria-smart-20250807-1501.zip maria-smart-20250807-1500.zip maria-smart-20250807-1459.zip maria-diagnostics-20250807-1441.zip
August 7, 2025Aug 7 Community Expert SMART looks fine for the four disks, two of them have some UDMA CRC errors. That's typically a bad SATA cable. Acknowledge the current errors, and if they continue to increase, replace the SATA cable.
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