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Forum Discussion
Faulty RAID controller = physically damaged HDDs?
Hi I’ve had three hard drives from different batches go bad in quick succession in the same drive 1 bay of this six-bay appliance. I tested each drive OK before installing it in the NAS. Is it p...
Many thanks, schumaku. I'll do as you suggest.
EDIT:
Removed the HDD from the ReadyNAS and ran it through DriveDX again to check its health.
It shows a rise in the "UDMA CRC Error Count", which DriveDX helpfully suggests could be a result of a bad data cable or power supply unit.
Which validates your guidance to check the backplane. Even though the appliance is seldom moved, it's possible something has worked free at some point, or the PSU could be failing.
Details from DriveDX
=== IMPORTANT HEALTH INDICATORS ===
ID NAME RAW VALUE STATUS
199 UDMA CRC Error Count 29 100% Warning
=== DRIVE ERROR LOG ===
# | TIME OCCURRED | ERRORS | PRIOR COMMAND
5 49 hours UNKNOWN ERROR WRITE FPDMA QUEUED
4 46 hours UNKNOWN ERROR WRITE FPDMA QUEUED
3 46 hours UNKNOWN ERROR WRITE FPDMA QUEUED
2 46 hours UNKNOWN ERROR WRITE FPDMA QUEUED
1 46 hours UNKNOWN ERROR WRITE FPDMA QUEUED
if anything I'd suspect whatever you're using to hook up the drives to the PC you run the test from, not the ReadyNAS.
What about if you check the drives through smartmontools on the ReadyNAS itself? smartctl -a /dev/<disk>
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