On Mon, 13 Nov 2006 10:48:53 EST, Jeff Garzik said: > 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. I've heard tell that the controller chip chews almost as much power as the drive motor does - is there an option that says "Controller take a snooze till we wake you up, but leave the drive spinning"?
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