I'm more impressed that you're actually getting a report predicting that
the drive is failing. I have never ever had a raid controller report a
disk may be failing. They just go straight from working to failed.
Usually failing into a high latency state, where they still work, just
really really slowly, so the raid doesn't take it offline.
On 12/4/2017 8:52 AM, Adam Moffett wrote:
I've got a somewhat old Dell Poweredge with a PERC H700 RAID controller.
About a year ago SMART predicted a failure on disk 4, so I replaced
it. A few weeks ago SMART predicted a failure on disk 4, so I
replaced it. Today SMART predicts a failure on disk 4.
On the second incident I have no doubts, because the disk made audible
noises. I'm just curious why it's always disk 4. Can the controller
conceivably do something that harms the disk? Just a statistical anomaly?
It's a RAID 1+0 by the way, so there should be a nearly identical
workload on one of the other disks.
