can anyone tell me based on the log im posting whether or not the issue is my hard drive or possibly the sata controller or sata cable. I had this issue happen on another drive the other day. I restarted and it came back into the pool but I had to rebuild it. Any help would be appreciated

Please post your diagnostics: Tools -> Diagnostics

Here is the diagnostics. 

thor-diagnostics-20180111-0446.zip

Looks like a bad disk, but since it dropped offline there's no SMART report, you need to reboot/power cycle the server and get new diags.

 

Disk1 is also a good candidate for replacement:

 

ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  5 Reallocated_Sector_Ct   0x0033   002   002   036    Pre-fail  Always   FAILING_NOW 4015

 

Edited January 11, 20188 yr by johnnie.black

That disk 1 is quite close to running out of spare sectors.

 

Do you have email notifications enabled? Because this disk is way below the manufacturer-specified threshold and unless all the reallocations happened at more or less the same time then this drive should have been flagged.

here is the drag after reboot

thor-diagnostics-20180115-0344.zip

Failed disk is still missing, so either bad connection or it's dead, maybe the latter since it's an infamous ST3000DM001, make sure you power cycled the server, rebooting might not be enough to bring it to life.

 

 

thank you for the great advice!!!