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From: Tejun Heo <tj@kernel.org>
To: Fredrik Tuomas <fredrik.tuomas@gmail.com>
Cc: linux-ide@vger.kernel.org
Subject: Re: Some of mine ST31000520AS drives unloads head very frequent and I 	cannot set APM on them
Date: Mon, 09 Nov 2009 17:19:49 +0900	[thread overview]
Message-ID: <4AF7D0A5.5030502@kernel.org> (raw)
In-Reply-To: <e44195c70909080252q18e26886p8adbf6183b70ebc2@mail.gmail.com>

Sorry about the long delay.

Fredrik Tuomas wrote:
> In the pdf on
> 
> http://www.seagate.com/staticfiles/support/disc/manuals/desktop/Barracuda%20LP/100564361a.pdf
> 
> you can read that APM is not supported on the disk. Now I'm confused.
> I can set APM on at least one of my drives. How can I prohibit the
> excessive loading/unloading of the heads if APM not is supported?

There are drives with vendor specific commands for controlling
powersaving behavior.  Unfortunately, you'll have to contact the
vendor for those.  :-(

Thanks.

-- 
tejun

      reply	other threads:[~2009-11-09  8:19 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-09-08  8:24 Some of mine ST31000520AS drives unloads head very frequent and I cannot set APM on them Fredrik Tuomas
2009-09-08  9:52 ` Fredrik Tuomas
2009-11-09  8:19   ` Tejun Heo [this message]

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