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

[Andi Kleen]

> 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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