Had a failing 2 TB drive.  Replaced it with an 8 TB drive.

Decided to do the "serverlayout" plug-in while I was at it and removed each of the drive bays to note the SN's for each.

Meanwhile I'd grown tired of the lag and 100% CPU utilization of my dual core Pentium processor, so I'd ordered a Xeon E3-1271 and it showed up in that days mail, so I shut the system down, and swapped the CPU.  Adjusted the BIOS on the initial startup.

On start up unRAID then rebuilt the bad (Empty) 2TB drive to the new 8TB.  Also, docker apps won't write to cache, so SAB won't D/L, Plex wont play, etc.

Then restarted and discovered that 2 different discs now had errors.  Did another parity rebuild of those, but when finished I get a run "fix common problems" error, and get the following errors: 

disk6 (ST31500541AS_6XW03QXX) is disabled Begin Investigation Here: 

disk16 (ST5000DM000-1FK178_W4J0BDZF) is disabled Begin Investigation Here: 

Unable to write to cacheDrive mounted read-only or completely full. Begin Investigation Here: 

 

Attaching log

 

Please help

unraid-syslog-20190326-0619.zip

Please post the diagnostics: Tools -> Diagnostics

 

For the cache drive you need to run a filesystem check:

https://wiki.unraid.net/Check_Disk_Filesystems#Checking_and_fixing_drives_in_the_webGui

THX!

Here's the Dx.

I'll work on the cache file system check. and let you know if I run into a problem.

unraid-diagnostics-20190327-0301.zip

Diags don't show the disks getting disabled, but since they look fine and both are using the same Marvell controller, and these are known to drop disks, that's where I would start, by replacing it.