LSI Corporation
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12Gb/s MegaRAID SAS Software User Guide
March 2014
Chapter 6: StorCLI
Working with the Storage Command Line Tool
6.6.8
Dimmer Switch Commands
6.6.8.1
Change Virtual Drive Power Settings Commands
The Storage Command Line Tool supports the following command to change the Dimmer Switch setting. The Dimmer
Switch is the power-saving policy for the virtual drive.
storcli /c
x
/v
x
set ds=<default | auto | none | max | maxnocache>
This command changes the power-saving properties on a virtual drive. See
dimmerswitch
in the following table
for values.
Input example:
storcli /cx/vx set ds=default
NOTE
Only the ds3 dimmer switch option cannot be selected in the Storage
Command Line Tool.
You can use the following combinations for the Dimmer Switch commands:
storcli /c
x
set ds=off type=1|2|3|4
storcli /c
x
set ds=on type=1|2 [properties]
storcli /c
x
set ds=on type=3|4 defaultldtype=
<value>
[properties]
storcli /c
x
set ds=on [properties]
The following table describes the power-saving options.
Table 52 Dimmer Switch Input Options
storcli/c
x
show DimmerSwitch(ds)
This command shows the current Dimmer Switch setting for the controller.
Input example:
storcli/c0 show ds
Option
Value Range
Description
dimmerswitch
or
ds
on|off
Turns the Dimmer Switch option on.
type
1
: Unconfigured
2
: Hot spare
3
: Virtual drive
4
: All
Specifies the type of drives that the Dimmer Switch
feature is applicable. By default, it is activated for
unconfigured drives, hot spare drives and virtual drives.
defaultldtype
auto
: Logical device power savings are managed
by the firmware.
none
: No power saving policy.
max
: Logical device uses maximum power savings.
maxnocache
: Logical device does not cache write
to maximise power savings.
Specifies the default logical drive type that is created by
the Dimmer Switch option; set to none automatically.
properties
disableldps
: Interval in hours or time in
hh:mm
format
spinupdrivecount
: Valid enclosure number (0
to 255)
SpinUpEncDelay
: Valid time in seconds
Sets the interval or time in which the power-saving
policy for the logical drive is turned off.
Specifies the number of drives in the enclosure that are
spun up.
Specifies the delay of spin-up groups within an enclosure
in seconds.
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