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ataidle.8
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ataidle.8
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.\" man page for ATAidle
.\" Contact [email protected] to correct errors or omissions
.TH man 8 "August 2008" "2.4" "ATAidle"
.SH NAME
ataidle \- a utility to spin down ATA drives
.SH SYNOPSIS
.\" Syntax goes here.
.B ataidle [-h] [-i] [-s] [-o] [-I
.I idle_mins
.B ] [-S
.I standby_mins
.B ] [-A
.I acoustic_level
.B ] [-P
.I apm_level
.B ]
.I device
.SH DESCRIPTION
.B 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.
.SH OPTIONS
.IP -h
show usage information
.IP -i
put the drive into idle mode
.IP -s
put the drive into standby mode
.IP -o
put the drive into sleep mode
.IP -I
spins down the drive into
.B idle
mode after idle_mins minutes of inactivity
.IP -S
spins down the drive into
.B standby
mode after standby_mins minutes of inactivity.
However, using this mode usually immediately spins
down the drive.
.IP -A
set the
.B acoustic
level of the hard drive. This allows you to reduce the
acoustic output of the drive at the expense of performance.
.IP -P
set the
.B Advanced Power Management
level of the drive. This allows you to lower the power
consumption of the drive, at the expense of performance.
A very low
.B apm_level
will make the drive go into standby mode to save power.
.SH NOTES
Notes on Auto Acoustic Management (AAM) and APM support
These features are experimental, and should only be used
after verifying that the drive works when sent those commands.
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.
.IP
Meaning of AAM values:
.IP 0
Acoustic management disabled
.IP 1
Minimum acoustic output
.IP 2-126
Intermediate acoustic output levels
.IP 127
Maximum performance, maximum acoustic output
Meaning of APM values:
.IP 0
APM disabled
.IP 1
Minimum power usage with Standby (spindown)
.IP 2-127
Intermediate power usage with Standby
.IP 128
Minimum power usage without Standby (no spindown)
.IP 129-253
Intermediate power usage without Standby
.IP 254
Maximum performance, maximum power usage
.SH AUTHOR
Bruce Cran <[email protected]>
.SH "SEE ALSO"
.BR atacontrol (8),
.BR hdparm (8),
.BR smartctl (8)