September 18, 20232 yr Hi A few days ago, unRAID reported that one of my parity disks had an error. As a result, it was automatically disabled. Now I shut down the server, checked the cabling and ran an extended SMART test on the failed disk (sdo). No errors. Now I'm not quite sure what to do next and would be happy if someone with experience could check whether there are further informationen about the issue. What caused the error? <diagnostics removed> Thank you in advance. Edited September 18, 20232 yr by 0x3 removed diagnostics
September 18, 20232 yr Community Expert Solution The SMART report for the drive looks OK. You can rebuild parity to the same drive by using the procedure described here in the online documentation accessible via the ‘Manual’ link at the bottom of the GUI or the DOCS link at the top of each forum page. In terms of what caused the issue difficult to say. The syslog is only held in RAM and restarts each time Unraid is booted. If you want persistent syslog that can survive a reboot then you need to enable the syslog server.
September 18, 20232 yr Author 10 minutes ago, itimpi said: The SMART report for the drive looks OK. Thank you. I appreciate your help. I proceeded as described and got an "udma crc" error after removing the disk. Is it the case that such errors pop up again when removing or changing the disks' assignment and may be an old problem? The first thing I did was check the cabling. Maybe that was the initial problem and it's already been fixed.
September 18, 20232 yr Community Expert 53 minutes ago, 0x3 said: Thank you. I appreciate your help. I proceeded as described and got an "udma crc" error after removing the disk. Is it the case that such errors pop up again when removing or changing the disks' assignment and may be an old problem? The first thing I did was check the cabling. Maybe that was the initial problem and it's already been fixed. The CRC errors are normally related to connection issues rather than drive issues. They are stored on the drive firmware and never reset so fixing the problem simply stops them increasing. You can click the orange ‘thumbs down’ icon against the drive on the Dashboard and select acknowledge which means you only get notified again if it changes.
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