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Forum Discussion
Need advice for failed volume sync
Ultra 4 originally with 3 2TB drives (from compatibility list). Drive 3 reported dead, so I replaced it with a 3TB drive (from compatibility list). The intent was to add another matching 3TB dive to...
Not the ST32000542AS.
BeamSizer wrote: I googled and found quite a few forum posts and sites stating the ReadyNAS falsely was falsely reporting good drives as bad.
ATA errors include garbled commands that the drive correctly rejects - so backplane issues or even firmware bugs can provoke them. Of course a failing drive is also a cause. But if Seatools passes, and if you are still under warranty for the ultra (3 years for the original purchaser) you might contact Netgear support.
Also, I've found that the write test (seatools advanced tests) does find issues that the non-destructive tests miss. So you could try that as well (though it still will wipe the drives).
Even if the tests don't pick up anything, I would still be concerned. If disk I/O isn't solid than RAID won't prevent data corruption (though it likely will detect it). If you stick with these drives, I'd be schedule scrubs and file system checks, and keep a close watch for problems.
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