Messages in this thread | | | Date | Mon, 13 Nov 2006 16:11:30 +0000 | From | Alan <> | Subject | Re: AHCI power saving (was Re: Ten hours on X60s) |
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On Mon, 13 Nov 2006 10:32:24 -0500 Jeff Garzik <jeff@garzik.org> 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.
We already detect PATA over SATA so we can trivially address that (the knobble check). Similarly we can turn ALPME on using a timer so it kicks in after long idle periods only, or tie it to laptop mode.
For a laptop type environment with SATA not bridged PATA turning it on is clearly the right thing to do.
Alan
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