Ubuntu
acpi-support package

  1. Bug #59695
  2. Comment #222

Comment 222 for bug 59695

Revision history for this message
Bart Samwel (bart-samwel) wrote : Re: [Bug 59695] Re: High frequency of load/unload cycles on some hard disks may shorten lifetime

ubuntu_demon wrote:
> Bart Samwel thanks for notifying us. Do you think acpi-support should be
> modified to use "hdparm -B 254" while on AC and "hdparm -B 128" while on
> battery (including booting from battery)? While on battery you generally
> want to save power and protect your disk from bumps by parking as soon
> as possible.

In my opinion, the only time when it is really safe and useful for the
HD to do -B with less than 254, is when laptop mode is enabled. In
Debian I wrote it so that control is left to laptop-mode-tools when
laptop mode is enabled and configured, so in those cases the user can
configure it differently. In all other cases we cannot be sure that it
is safe, so we apply -B 254.

--Bart