July 17, 20223 yr I have two parity disks if it matters. Week ago I had a drive throwing a ton of unrecoverable errors, write errors, was disabled. It was old, no biggie. Replaced it with a brand new disk, rebuilt the array. Today I lost a second drive. Massive unrecoverable errors. Replaced it with w brand new disk, began the array rebuild. Now, during the middle of the rebuild, the disk I replaced last week (with a brand new replacement) is up to 9008 unrecoverable errors. Although its not disabled (yet?) so they appear to be read errors. Question: how do I handle a disk that is throwing errors in the middle of a parity rebuild? As an aside, all of the disks that have thrown errors in the last week are on an external SAS controller. As a second aside, literally *every* time I've ever moved a disk, added a disk, swapped a disk, or looked at a SATA connector for more than ten seconds, over the entire time I have been using unraid (decade or more), CRC errors pop up. After a simple reboot they all disappear. Edited July 17, 20223 yr by tucansam
July 17, 20223 yr Community Expert What specifically do you mean by unrecoverable errors? These disk16 errors do seem to be disk problems. Since you have dual parity you could rebuild both 15 and 16 at the same time. If you stop the rebuild, you are still protected since only disk15 is currently invalid. Then you could run an extended SMART test on disk16. You will have to disable spindown on the disk to get the extended test to complete.
July 17, 20223 yr Author I mean read errors that show up in the "errors" column on the main page. I'm just about to 20% complete on the rebuild, so I may just let it ride and do an extended test when its done. Edited July 17, 20223 yr by tucansam
July 17, 20223 yr Community Expert Since you have dual parity, it doesn't really need disk16 to rebuild disk15.
July 17, 20223 yr Community Expert 24 minutes ago, tucansam said: just let it ride and do an extended test when its done
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