ataidle

man(8)                              ATAidle                             man(8)



NAME
       ataidle - a utility to spin down ATA drives

SYNOPSIS
       ataidle [-h] [-i] [-s] [-o] [-I standby_mins ] [-S standby_mins ] [-A
       aam_level ] [-P apm_level ] device

DESCRIPTION
       ATAidle sets various power management features on hard drives,
       including timeouts to switch to idle and standby power saving modes,
       and setting the APM (power) and AAM (acoustic) levels.  If only a
       device is specified, without options, information about the selected
       device will be shown.


OPTIONS
       -h     Show usage information

       -i     Puts the drive into Idle mode

       -s     Puts the drive into Standby mode

       -o     Puts the drive into Sleep mode

       -I     Puts the drive into Idle mode and configures the standby timer
              to put the drive into Standby mode after standby_mins minutes of
              inactivity.

       -S     Puts the drive into Standby mode and configures the standby
              timer to put the drive into Standby mode after standby_mins
              minutes of inactivity.

       -A     Set the acoustic level of the hard drive.  This allows you to
              reduce the acoustic output of the drive at the expense of
              performance.

       -P     Set the Advanced Power Management level of the drive.  This
              allows you to reduce the power consumption of the drive at the
              expense of performance.  A low apm_level will cause the drive to
              go into Standby mode to save power.


NOTES
       Notes on Auto Acoustic Management (AAM) and APM support

       AAM and APM settings are vendor-specific and not all intermediate
       values may be valid.  If you set an invalid APM value you will be
       notified that it failed - when setting an AAM value you should check
       the output of 'ataidle <device>' to see if it has been updated.  If it
       hasn't, the value isn't supported and you should try a higher or lower
       setting.


              Meaning of AAM values:


       0      Acoustic management disabled.

       1      Minimum noise.

       2-126  Intermediate noise levels.

       127    Maximum performance, maximum noise.

              Meaning of APM values:


       0      APM disabled

       1      Minimum power usage with Standby (spindown).

       2-127  Intermediate power usage with Standby.

       128    Minimum power usage without Standby (no spindown).

       129-253
              Intermediate power usage without Standby.

       254    Maximum performance, maximum power usage.

AUTHOR
       Bruce Cran <bruce@cran.org.uk>

SEE ALSO
       atacontrol(8), hdparm(8), smartctl(8)



2.7.1                            November 2011                          man(8)