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

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Mark Lord wrote:
Jeff Garzik wrote:
Andi Kleen wrote:

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.

Spinning-down would definitely shorten the drive lifespan. Does it do that?

Parking heads is more like just doing some extra (long) seeks.
Is this documented somewhere as being a life-shortening action?

I wrote this in the other thread but writing here too for documentation purpose.

* HL-DT-ST DVD-RAM GSA-H30N locks up completely on slumber. Physical power removal and reapply is the only to recover it.

* Some WD raptors spin down (yeap, that's right, it spins down) on slumber.

Wonderful world of ATA.  :-P

--
tejun
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