linux-kernel - Re: AHCI power saving (was Re: Ten hours on X60s)

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Message-Id: <200611131637.56737.ak@suse.de>
Date:	Mon, 13 Nov 2006 16:37:56 +0100
From:	Andi Kleen <ak@...e.de>
To:	Jeff Garzik <jeff@...zik.org>
Cc:	Pavel Machek <pavel@....cz>, John Fremlin <not@...t.any.name>,
	kernel list <linux-kernel@...r.kernel.org>, htejun@...il.com,
	jim.kardach@...el.com
Subject: Re: AHCI power saving (was Re: Ten hours on X60s)


> Therein lies a key problem.  Turning on all of AHCI's aggressive power 
> management features DOES save a lot of power.  But at the same time, it 
> shortens the life of your hard drive, particularly hard drives that are 
> really PATA, but have a PATA<->SATA bridge glued on the drive to enable 
> connection to SATA controllers.

How does it shorten its life?

-Andi
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