OK, so I will try to keep this short. 

Needed to add a drive. 

Got the least expensive drive I could (twice, one doa) a 14tb Recert WDC_WUH721414ALE604

I precleared it. 

When I attempted to add it to the array, the array failed to start.. I disabled the newly added drive to run a SMART scan, but then could not restart the array. 

I shut-down and restarted, so now I can start the array but disk6 is showing not installed (I guess I just expected it to go back to 1-5 the way it was, but I am unsure why it didn't mount.  It told me anything on the disk would be erased... I though maybe I could just reformat and try again.. however I then got the message I would loose the pre-clear info that took like 18hrs to run, so I didn't want to do that if it still would not work... So I just started an Extended SMART scan, it seems that can take quite a while too... 
I just want to make sure the disk is sound as well... drives aren't cheap atm, and I don't have another spare, so I am just trying to understand what is going on... I attached my diagnostics, but can attach the SMART log once that completes (how long is TOO long to wait, its been going over an hour at 90% completed) 

EDIT: I was thinking about the diagnostics, and they were not saved fully (thanks brave) when I shut-down and restarted after the new drive failed to mount the first time, so I am not sure if it will show the same thing, because I had set it back to disabled before the reboot... I am unsure of alot right now (its 3am).

 

Thanks in advance,

-G 

 

 

ezra-diagnostics-20250308-0124.zip

Edited March 8, 20251 yr by Garbonzo

Since the disk is disabled now, it would need to be rebuilt.

Yeah, I guess I dont understand what needs to be rebuilt... from my perspective I failed to add a disk6 that had been pre-cleared... the array never mounted from my pov. meaning it didn't have that red x until I removed it because the array wouldn't start. Only then, now that its disabled does it have the X and is showing "not installed" but there was never any data written to it so I didn't think what I was seeing now was an "emulated" disk6 of the 14tb that I failed to add... I am confused but its 4:19am and I should't reply anymore tonight (probably not productive) but thanks for the response, and I will look at any further responses with fresh eyes in the a.m. 

Thanks again,

-G 

If the disk never mounted you could do a new config without it, check parity is already valid, and add the disk again, but good to run a parity check after to confirm all is OK.

Ok, if  I was going to do that I guess I could just re-format it and re-add it and see what happens. 

It just gave me the warning that I would loose the pre-check info and that re-formatting it would cause it to take awhile to add again (I was thinking that kinda implied about the time of a parity-check or something, wasn't sure... (and the extended test is still running... not sure exactly how many hrs, but around 10 now...  

So it sounds like there's no ""magic" thing I need to do to maintain the pre-check data or whatever, that ship has sailed? I just need to add it as if it was a disk I just put hands on...  I am not going to cancel this extended self check if it is still running, I read that can sometimes take like 18hrs? Am I good do to use the array/dockers/vms just not shut down the array (or of course reboot). 
Thanks once again for your assistance @JorgeB