Hello,
I've been running my unraid server for 6-7 years and have never had a problem with it. I recently started filling up my data disks so I upgraded my parity drive and one data drive. The latter which resulted in my parity drive becoming disabled. Before I do anything stupid, I'd very much appreciate a heading check on this. My original configuration was:
2TB parity, 2 x 1TB data disks, 3 x 2TB data disks (all green balls)
I bought 2 x 4TB drives and precleared them both using the preclear plugin and the default settings and both drives passed. So I swapped my 2TB parity disk for a 4TB disk and rebuilt and then rechecked parity. Everything was great. So my intermediate configuration was:
4TB parity, 2 x 1TB data disks, 3 x 2TB data disks (all green balls)
Then I removed one of the 1TB data drives and replaced it with the other 4TB I had just precleared. Unraid noticed I was missing the 1TB drive, so I assigned the 4TB drive to that disk and started the array. It began a prarity-sync/ data rebuild. Everything seemed to be going fine until ~50% of the way through the rebuild when my parity drive started racking up errors like crazy. The parity sync ended with 495M errors. Attached are the notifications I got at the end as well as my syslog and the SMART reports.
The server has been sitting on my desk plugged into the same power supply it has been for the last couple days and the power cables and sata cables are snug in the drives and the MB.
Current configuration is:
4TB parity, 1 x 1TB data disks, 3 x 2TB data disks and 1 x 4TB (all data disks are green balls, but the parity disk is a red X and disabled)
Did I do something wrong when I swapped out the 1TB data disk with my new 4TB drive?
Is it a coincidence that the rebuild started producing error when it got passed 2TB (the former max size of my drives)?
Is it normal to get errors like that when expanding a data disk beyond the former max size of the other data drives?
Should I recheck/rewirte parity now that the new disk is showing green?
I haven't done anything yet, and don't plan to until I can confirm that is a good idea and won't lead to irreversible data loss.
Note: I still have my original 2TB parity drive and the old 1TB data drive untouched since I removed them. So I can go back to my original configuration if needed I suppose.
Many thanks for reading this and for any help you might be able to provide!
syslog.txt
ST4000DM004-2CV104_ZFN1MRTV-20190206-2026 parity (sde).txt
WDC_WD10EARS-00Y5B1_WD-WCAV5F079658-20190206-2026 disk3 (sdf).txt
WDC_WD20EARX-008FB0_WD-WCAZAE351759-20190206-2026 disk1 (sdd).txt
WDC_WD20EARX-008FB0_WD-WCAZAH409009-20190206-2026 disk2 (sdc).txt
ST2000DM006-2DM164_Z4ZCJSD3-20190206-2026 disk5 (sdb).txt
ST4000DM004-2CV104_ZFN1M5V8-20190206-2026 disk4 (sdg).txt