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

[Jeff Garzik]

Andi Kleen wrote:
> > 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?

Parks your hard drive heads many thousands of times more often than it 
does without the aggressive PM features.

	Jeff



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