October 14, 20232 yr Hi Everyone, Hoping there is a solution to this other than "you've lost a heap of data and there's nothing you can do about it. I noticed that my parity drive had a red cross [see image] and was disabled. couldn't see anything obvious so I googled and found that some have had similar situations which was a faulty sata cable. I've replaced this but no resolution. I then did a read check on the array and came back with a heap of read errors on one of the pool drive [and a smaller number on one of the other drives; as per the image]. I'm at a loss to know where to go from here. I have attached diagnostic in the hope someone can point me in to a solution or to confirm data is gone and I just need to replace 1 or both drives. Thanks in advance for any help that can be provided. greatwhite-diagnostics-20231014-1019.zip
October 14, 20232 yr Community Expert Disk8 dropped offline, disk9 is showing a lot of UDMA CRC errors, replace cables for both and post new diags after array start.
October 14, 20232 yr Author Thanks JorgeB, I have replaced both cables which has definitely made a difference. Disk 8 seems to no longer have read errors however it is reporting UDMA CRC errors in the UI [as per image below]. greatwhite-diagnostics-20231015-1038.zip
October 15, 20232 yr Community Expert Solution No issues so far, CRC errors are from before, try re-syncing parity now. https://docs.unraid.net/unraid-os/manual/storage-management#rebuilding-a-drive-onto-itself If there are more errors post new diags before rebooting.
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