May 28, 20242 yr I have been digging through the forums here and trying to find answers to my specific issue. Initially I had what I saw as a failing drive. Because I had enough space to absorb the loss, I went through the documented process for shrinking the array and removing the affected drive outlined here https://docs.unraid.net/legacy/FAQ/shrink-array/ The problem I have had is one that seems to be a moving target. I completed the process outlined above but then the parity rebuild just hangs forever and I am now seeing errors on a different drive from what I saw before. initially the problems were with disk 4(sdb). Now, during parity rebuild the errors seem to be on disk 1(sdg). Again, parity seems to be getting stuck and my fear is that I am going to lose some or all of my data. If there is something I have missed in my efforts please let me know. My log is attached. Your help is appreciated. unraid-diagnostics-20240528-1235.zip
May 28, 20242 yr Community Expert It's not logged as a disk problem and SMART for disk1 looks OK, replaces cables, both power and SATA, and try again.
May 28, 20242 yr Author 9 minutes ago, JorgeB said: It's not logged as a disk problem and SMART for disk1 looks OK, replaces cables, both power and SATA, and try again. I will go through it again in a little while and check the cables. I did that early on with the first disk but hopefully I missed something. Thank you for the response.
May 30, 20242 yr Author @JorgeB I really appreciate the suggestion to go back through the cables. The first time went through them with the first drive failure I had been using one of those sata power extensions. My power supply only has 6 sata power connectors and I have 7 drives in the machine. I guess the extensions were causing problems because as soon as I reconfigured the power for each drive to come straight from the power supply cables, the parity sync kicked off just the way it was supposed to. I still had to use an extension for one drive but I will keep an eye on it. Thanks again for the suggestion. I will be adding in the previous drive that I thought was bad. When I ran the smart on that drive, it never showed any errors or failures. I thought that was weird but of course I didn't know the cables were an issue. Parity sync did finish successfully.
May 30, 20242 yr Community Expert @Null Spot the Destroyer Does your PSU have any Molex connectors? If so then using Molex->SATA splitters is more reliable as the Molex connector can carry much more current than the SATA one.
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