Backstory: It started with having a drive being emulated. Soon after that, The server shut down and would not restart. I replaced my motherboard after having determined that my old motherboard was bad. I bought a used Supermicro X9DRH-7F from E-bay. After fiddling in the bios, I finally got Unraid to boot, but I now I have two disks shown as having no file system. All of the drives in the system are the same as before, included the disk that was being emulated. I was expecting to have problems with the one drive that was emulated previously, but having two drives down is a problem since I have only one parity.

tower-diagnostics-20221219-2021.zip

Edited December 22, 20223 yr by Morpheus

No valid filesystem is being detected on disks 1 and 2, assuming they were also xfs you can force to see if it makes a difference, click on both disks and change the fs from auto to xfs and try again.

Thanks for your help. I was able to repair one of the drives. Both times that I started the array, Parity rebuild started.  I pause the rebuild in less than a minute each time. Do I format and rebuild the second data drive from parity even though parity had started to rebuild itself, or is it time to cut my losses, format the data drive, and rebuild parity? I'm fairly confident that I  have recovered all of my "irreplaceable" data so If I lose whatever is on the data drive it's not a huge problem.

1 hour ago, Morpheus said:

Do I format and rebuild the second data drive from parity

Format is a write operation. Unraid treats that write operation as it does any other, by updating parity so it is consistent with that write.

 

If you format a drive in the parity array, parity will agree that it has been formatted, so the only thing it could rebuild is a formatted drive.

 

Format is NEVER part of rebuild.

 

If you are fine with reformatting, you can New Config, rebuild parity, and format those data disks. They can be formatted while parity is rebuilding or after.