My parity drive started disabling itself recently. I tried swapping which bay it was plugged into, and a few days later it had the same issue. I don't think it's the backplane since none of the other drives have issues.

 

I ran the extended SMART test and it said it passed okay, but I'm guessing there is something wrong? Do I need to go get a new parity drive?

gunhaver-diagnostics-20180801-1211.zip

Disk should be fine. Any spare slot / bay ?

I've tried it in 2 bays with the same results. I guess I could try a few more.

Tried in another bay and it has the same issue. Got to be the drive at this point right?

Parity is failing and needs to be replaced:

 

ID# ATTRIBUTE_NAME          FLAGS    VALUE WORST THRESH FAIL RAW_VALUE
 200 Multi_Zone_Error_Rate   ---R--   200   200   000    -    12

This attribute should be 0, a non 0 value is very bad news fore any WD drive, there are also recent UNC errors on the SMART report.

Perfect, thanks! That's just what I needed to know.