Parity check is finding 2 errors after two complete runs (run without error correction).      I can't see any errors in the diagnostic sys logs (attached).   Are the parity check errors stored in some other log?   Also why does the array show "parity is valid" even though there are 2 errors?   Note: I have run an extended smart test on the single parity drive and it passed with no errors.   Short tests only run on data disks and no errors.   

 

Am I correct that I shouldn't upgrade any disks until the errors are cleared?

tower-diagnostics-20240303-1444.zip

If the two non correcting checks found the same two errors just run a correcting check now, then keep monitoring the future checks, a few sync errors can happen after an unclean shutdown, if they happen without an apparent reason, there's likely an underlying hardware issue.

Thanks.   That parity drive did have some unclean shutdowns last week due to a failed graphics card but none recently.   In any event, I just pulled that parity drive to put in a larger one and plan to use the smaller old parity drive as a data drive.   Man, does it take a long time to resync and resilver drives - at least 24 hrs for the new 8TB parity and repurposing the old 5TB.