On Mon, 5 Nov 2007 18:10:27 -0400
Michel Filipe <[EMAIL PROTECTED]> wrote:

> Is really that the Disk Power Management (hdparm -B 1 -S 12 /dev/sda) is 
> prejudicial to HardDisk? With the history of Ubuntu is decrease the life of 
> disks, I got curious. 
> 
> I'm use the Gentoo.
> 
> Bye!
> 

Hi!  Using aggressive APM this way can shorten your disk life, so you only
want to use these settings when you are in a low power situation.  A lot
of distros will execute hdparm when you unplug your cable, and you'll
have to check the settings for your distro to confirm this.  You may want
to play with the settings to help you decide what is best for you.  Read
the man page on hdparm for more details, but essentially hdparm -B 1
tells the drive to go into the most aggressive APM mode it has.  You can
use a value between 1-255, where 255 is completely off.  The -S parameter
tells the drive to spindown after 1 minute of inactivity (it's multiples
of 5 seconds).

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