Re: detecting/correcting _slightly_ flaky disks

[Bill Davidsen <davidsen@tmr.com>]

Michael Stumpf wrote:
> Bill Davidsen wrote:
>> Michael Stumpf wrote:
>>> This is the drive I think is most suspect.  What isn't obvious, 
>>> because it isn't listed in the self test log, is between #1 and #2 
>>> there was an aborted, hung test.   The #4 short test that was 
>>> aborted was also a hung test that I eventually, manually 
>>> aborted--heard clicking from drives at that time, can't swear it was 
>>> from this drive though.
>>>
>>> Not sure I fully understand the nuances of this report.  If anything 
>>> jumps out at you, I'd appreciate a tip on how you read it.  (to me, 
>>> looks mostly healthy)
>>>
>> For what it's worth, if you are getting hung tests, either your drive 
>> or power supply should be redeployed as a paperweight. My opinion...
>>
> I don't disagree but I'd like to find something more concrete or 
> repeatable, especially given that these give an audible click when 
> failing.  The problem I'm having is that I can't nail down precisely 
> where the problem is, although your suggestion makes a lot of sense.
Well, here's thought if you are inclined... power up and go into BIOS 
config mode. That will leave the drives powered but not in use. Now pull 
the power cable out on one of them. Does the drive make a familiar click 
as the heads do an emergency park? That's the easiest thing to check 
which might cause the click. One thing your SMART doesn't include is 
Temp, which might or might now tell you anything. You could try hddtemp, 
but SMART would probably report it if the sensor was there.
>
> After running Justin's suggested badblocks test, I'm kind-of-disturbed 
> to see that all these drives are passing with flying colors.
>
> Firmware issue?  WD had it in the past.
Certainly you could check for newer firmware, and to see if all drives 
have the same level.
>
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-- 
bill davidsen <davidsen@tmr.com>
  CTO TMR Associates, Inc
  Doing interesting things with small computers since 1979