Hi

My parity check is estimated to take days, the rate on drives drops to 0 and shows a very low read figure of approx 3mbs, I have stopped all dockers and checked drives which seem fine, everything is working as expected apart from parity check, could someone have a look at my logs and advise accordingly

Kind regards

Fergin

unraid-diagnostics-20251210-1005.zip

Check/replace cables for disk7 and try again

Hi

Just replaced cable for brand new sata cable and same result, any other ideas

Regards

Fergin

Post new diags during the parity check.

Thanks

New diag during parity check

Thanks

unraid-diagnostics-20251210-1704.zip

Now it's showing issues with disks 4 and 5. Any power splitters in use? It could also be a bad/weak PSU

Thanks

I’m going to try new sata cables on all Hdds, I do have a few power splitters

I’ll try and look at psu as well, thanks for your help

I’ll post back when I’ve changed out a few things

Fergin

Hi

Just changed all sata cables for new, checked all power cables and removed any unnecessary power splitters, still same result, short of buying a new psu, is there anything else you could suggest, server is working normally except slow parity

Regards

Fergin

unraid-diagnostics-20251211-1411.zip

Still issue with disk5, could also be a bad controller, you have two, swap the disks between them and post new diags, to see where the issue follows.

Thanks,

The odd thing is the parity check suddenly jumped to approx 120mb/s and seems to be staying there, I’ll leave it run for now, when finished will swap disk 5 from one controller to another as suggested and post logs

Thanks for help

Fergin

Hi

Did some cable swapping but one of the drives has failed, replaced with new and all seems fine, so I guess it was a failing drive, thanks for your help

Regards

Fergin

Just an update, might help someone else

After swapping drive had another disappear from array, and couldn’t do a parity check kept going to zero, after messing about with cables swapping sata drives, but the bullet and purchased a new psu, which arrived today, no more problems, even failed drive has passed a quick smart test, parity rebuilding as we speak and drive which sowed errors on full test, I guess power supply as suggested can make a big difference

Regards

Fergin