Re: How smart is S.M.A.R.T.?

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Author: George Toft
Date:  
To: Main PLUG discussion list
Subject: Re: How smart is S.M.A.R.T.?
Credible - hmmm - all I have is the vendor's assertion the drives were
new from Seagate. Times two vendors.

For you WD fans out there - I just had 4 WD Enterprise drives fail on me
in the past month (out of 18 in two arrays). They were all dated Nov
2010 - that should give you an indication how long they last under
24x7x365 use in a data center.

Regards,

George Toft

On 10/17/2014 8:43 AM, wrote:
>
> If you have credible evidence that Seagate is selling used Hitachi
> drives as new and under their label I'm sure your State Attorney
> General would like to hear from you.
>
>
>
>
> On 2014-10-17 10:08, George Toft wrote:
>> How many [thousand] hours on the drive? I think you're gambling if
>> you have more than 26,000 hours (3 years) and ESPECIALLY if it's
>> really a Hitachi drive. Seagate bought Hitachi recently, and from
>> what I've seen, are selling used Hitachi drives as "new" Seagate
>> drives - check the model number and the run hours!
>>
>> Hard drives are killing me this year - I've spent over 80 hours in
>> rework because of failed drives - especially with Seatachi drives (see
>> above). 80 hours of rework at no pay is a painful lesson.
>>
>> Regards,
>>
>> George Toft
>>
>> On 9/11/2014 4:06 PM, wrote:
>>> Greetings!
>>>
>>>
>>> I have a 500GB Seagate ST3500312CS SATA drive salvaged from a
>>> decommissioned DVR. The DVR's OS said SMART status OK. The latest
>>> Seatools disk utility from the Seagate website says the drive is
>>> A-OK (short test, long test, full erase, re-test) no errors found.
>>>
>>> However, the Gnome disk utility in Mint 17 says 'Threshold not
>>> exceeded' and 'Disk is OK, 178 bad sectors'.
>>>
>>> Some other SMART attributes displayed:
>>>
>>> ID1        Read Error Rate: 152141757
>>> ID5      Reallocated Sector Count: 178 sectors
>>> ID187     Reported Uncorrectable Errors: 0 sectors
>>> ID198    Uncorrectable Sector Count: 0 sectors
>>> ID199    UDMA CRC Error Rate: 0

>>>
>>>
>>> GSmart Control 0.8.7 is reading the same thing, 178 sectors, but
>>> also says it's OK.
>>>
>>> running an e2fsck from gparted reports 0 bad blocks.
>>>
>>> I've also retested in another machine with different cables to
>>> minimize the possibility of bogus hardware or BIOS issues, but the
>>> results remain the same.
>>>
>>> Seagate's website has a FAQ that says their tools should be the
>>> final say as they're designed to work correctly with their drives.
>>>
>>> Normally a bad sector or two wouldn't bother me, I have drives that
>>> have been running for years like that. I just keep backups fresh and
>>> check for bad sector growth. A few bad sectors is within spec and
>>> that's why HDD's have a reserved area. Yet somehow 178 sectors seems
>>> like a lot.
>>>
>>> Should I trust this drive for anything more than a paperweight?
>>>
>>> Should I trust anything with the words 'smart', 'affordable', or
>>> 'free' in the name? ;]
>>>
>>>
>>> Thanks!
>>>
>>>
>>> --Kenn
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>>
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