Cancel Critical Device: /dev/sdd [SAT], new Self-Test Log error at hour timestamp 14001

[dan]

@Robert_Heselwood

If there are no errors, why am I getting the Critical Device error message

Because ZFS errors and device errors aren’t the same thing.

Hard Drive Troubleshooting Flowchart

What is this: This is a very simple to follow (well for me) set of flowcharts to diagnose drive problems/failures. There is a small bit of ZFS included as many people jump on a drive failure prematurely when it is actually a ZFS issue, so a very small part of ZFS is included, this is not a ZFS troubleshooting guide. What is included you ask? ZFS ERRORS CRITICAL DRIVE ERRORS NON-CRITICAL DRIVE ERRORS SUSPECT FOUL PLAY (ALTERED DRIVE DATA) - The Seagate Drive Issue Saga Specific commands used…