Ryan Howard
Cadet
- Joined
 - Dec 22, 2015
 
- Messages
 - 6
 
I've been having a weird problem with my pool becoming degraded, and I'm trying to get to the bottom of it. It was running fine for many months. Luckily I didn't have anything important on the disks. At night, I always get some errors emailed to me. The pool first goes offline, then becomes degraded. 
My freenas server consists of a Supermicro X8DTN+ wth 64gb of ECC ram, 12 2tb WD black drives, a M1015 that handles 8 of the drives, and the remaining 4 drives plugged into the mobo sata ports. 2 vdevs with 6 drives each, in RaidZ2.
The disks that show up as removed are always the ones plugged into the mobo ports.
Here is a screenshot of the output of zpool status -v, and glabel status. http://i.imgur.com/bTWOWgo.png
The SMART output of the offending disks looks fine, it passes all tests. I need to get this back up and running. Right now I'm thinking about buying a new backplane with a sas expander so I can plug all the drives in the M1015. Any thoughts?
	
		
			
		
		
	
			
			My freenas server consists of a Supermicro X8DTN+ wth 64gb of ECC ram, 12 2tb WD black drives, a M1015 that handles 8 of the drives, and the remaining 4 drives plugged into the mobo sata ports. 2 vdevs with 6 drives each, in RaidZ2.
The disks that show up as removed are always the ones plugged into the mobo ports.
Here is a screenshot of the output of zpool status -v, and glabel status. http://i.imgur.com/bTWOWgo.png
The SMART output of the offending disks looks fine, it passes all tests. I need to get this back up and running. Right now I'm thinking about buying a new backplane with a sas expander so I can plug all the drives in the M1015. Any thoughts?