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

Jeff Garzik
2006-11-13T15:48:59Z

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