Subject: Re: Western Digital 250G hard drive
To: Andy Isaacson <>
From: Manuel Bouyer <>
List: tech-kern
Date: 12/04/2003 22:35:21
On Thu, Dec 04, 2003 at 03:11:43PM -0600, Andy Isaacson wrote:
> The rotational engine is not the only mechanism in a hard drive that
> might be influenced by "power saving" or "low noise" mode.  A more
> significant issue is how the seek mechanism works.  It's my
> understanding that at least some manufacturers have several selectable
> profiles for how quickly the drive heads seek; slower seeks mean that
> the electromagnets don't need as much current, which translates to less
> heat.
> Seems like a more significant issue than the spinning portion, to me.

Yes, probably. But the current ATA power saving command set doens't allow
to change this. The "low noise" mode probably is.

Manuel Bouyer <>
     NetBSD: 24 ans d'experience feront toujours la difference