Bug#625922: Failures with ST2000DL003-9VT166
In my case the head-parking and the power-on (real power on) values are the same, seems that I have that feature disabled.
4 Start_Stop_Count 0x0032 100 100 020 Old_age Always - 76
9 Power_On_Hours 0x0032 086 086 000 Old_age Always - 12291
12 Power_Cycle_Count 0x0032 100 100 020 Old_age Always - 80
193 Load_Cycle_Count 0x0032 100 100 000 Old_age Always - 80
On 16/09/2012, at 00:13, Carlos Alberto Lopez Perez <clopez@igalia.com> wrote:
> On 15/06/11 22:15, Paul Faure wrote:
>> I upgraded my raid disks to 4 ST32000644NS (Seagate Constellation 2TB) and I
>> haven't had an issue since.
>>
>> I have also moved the cheaper ST2000DL003-9VT166 disks to a Windows XP box
>> (in a non raid environment) and haven't seen a problem in days now.
>>
>> There are plenty of references online now popping up saying that green disks
>> are not designed or supported in a raid environment. Weather or not that's
>> because of a physical issue, or a software issue, im not sure.
>>
>> Paul
>>
>
> Just a guess: One of the "features" of green drivers is that they park
> the heads every few seconds [1] without disk activity. Can this be the
> root of the problem?
>
> Perhaps the HDDs are slow responding when they have the heads parked
> (which tends to happen too much often than with normal drives) and this
> causes this issue.
>
>
> You can disable this by forcing a one-hour timeout for parking the heads
> with:
>
> hdparm -S 242 /dev/sdX
>
>
> This needs to be done at boot time each time. Perhaps an init.d script
> would help.
>
> You can check the SMART attribute 193 of your drives, which tells you
> how many times the drive has parked the head in its life. You will see
> that this number is far greater on such "green drivers" than on normal
> drives.
>
> smartctl -a /dev/sdX | grep 193
>
>
> Regards!
> --------
>
> [1] http://forums.anandtech.com/showthread.php?t=2085685
>
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