Re: Dangerously high Load_Cycle_Count on my Thinkpad T61 Hitachi drive
On Sun, 02 Jun 2013, Celejar wrote:
> On Sun, 2 Jun 2013 21:54:09 -0300
> Henrique de Moraes Holschuh <hmh@debian.org> wrote:
> > http://www.thinkwiki.org/wiki/Problem_with_hard_drive_clicking
> >
> > > 2) What should I do to attempt to preserve whatever life it has left?
> > > hdparm -B 254/255? Anything else?
> >
> > You need to issue that hdparm every time the box had any reason to change
> > power policy to be sure it stuck. So make sure to reissue it when waking
> > up, and when AC power is connected/disconnected.
>
> Thanks. Any ideas about why the load cycle count is so high and
> increases so fast? I thought even -B 128 is a pretty standard value.
> And would you recommend 254 or 255?
It will unload the heads when left idle for a few seconds, presumably so as
to power off the head actuator. Also, the HDD is much less prone to damage
due to shock when the heads are unloaded...
> As to where to put the hdparm invocations, I suppose that writing an
> "OnResume nn hdparm ..." directive in hibernate.conf will take care of
> issuing it on wakeup, and setting all *_HD_POWERMGMT=254 in
> laptop-mode.conf will take care of the AC power connect / disconnect
> cases?
Laptop mode was enough to deal with it on my T43, yes. Note that I
configured it manually.
As for the 600k head unload limit on the Hitachi 7K60 and 7K100 HDDs, that
value comes directly from the data sheet.
--
"One disk to rule them all, One disk to find them. One disk to bring
them all and in the darkness grind them. In the Land of Redmond
where the shadows lie." -- The Silicon Valley Tarot
Henrique Holschuh
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