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Parity read errors

Featured Replies

Got notified that I have parity read errors (896) on my server.  How can I troubleshoot to see if it is in fact a bad drive or something else.  I have attached diagnostics for your reference.  Thanks for taking the time.

 

parity drive - WD red 6TB

Unraid ver - 6.8.3

hoth-diagnostics-20201002-1005.zip

  • Community Expert

Disk dropped offline so there's no SMART report, unless the disk died it's like a connection problem, check cables and post a SMART report.

  • Author

to check cables I need to turn off server.  Is there any other info I need before I turn off the server?

  • Community Expert
9 minutes ago, mrlionman said:

Is there any other info I need before I turn off the server?

Nope

  • Author

I swapped data cables with another drive to see if the issue follows the cable or stays with the drive.  I'm unable to start a smart short or extended self-test when I click on start it doesn't do anything.  When I try to show self test history or error log they are blank.  I have attached the smart report.

hoth-smart-20201002-1104.zip

  • Community Expert

That disk has SMART disable, when a disk is part of the array Unraid enables it automatically, since it's currently unassigned you need to enable manually:

 

smartctl -s on /dev/sdX

 

Then grab a report.

  • Community Expert

Looks fine, most likely a connection issue.

  • Author

ok i have swapped cables, how do I put the parity drive back in service

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