I replaced a 2tb drive with a 4tb drive. rebuild successful. it has been some time for me in having to perform this procedure. I recall in the past after a successful rebuild, parity would show as "valid but not checked yet" or similar and then it was recommended to run parity check to verify success. I currently see in gui parity is valid and Last check completed on Tue 05 Sep 2017 05:48:04 AM CDT (today), finding 0 errors.

Is it no longer necessary to run a parity check after a disc rebuild with version 6.3.5 and dual parity when replacing and rebuilding a disc?

 

thanks.

Edited September 7, 20178 yr by wirenut

Not necessary, but many recommend a non-correcting parity check after a data disk rebuild to check whether the rebuilt disk actually agrees with parity after the rebuild. I always do this, but I have never had any come back with errors.

I generally do one after about 48-72 hours to put a few hours on the new hd.  Then I check the SMART report to see if that found any issues. 

thanks fo rthe replies,
better safe than sorry. I'll kick one off before retiring for the night.