LSI Corporation
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12Gb/s MegaRAID SAS Software User Guide
March 2014
Chapter 9: Configuration
Changing Power Settings
to cool and house the drives, respectively. Also, this technology helps avoid application timeouts caused by spin-up
delays and drive wear caused by excessive spin-up/down cycles.
You can use the
Power Settings
field in the MegaRAID Storage Manager software to choose whether to allow
unconfigured drives or Commissioned Hotspares to enter Power-Save mode.
NOTE
The Dimmer Switch technology is enabled by default.
When they are in the Power-Save mode, unconfigured drives and drives configured as Commissioned Hotspares
(dedicated or global) can be spun down. When spun down, the drives stay in Power-Save mode except for periodic
maintenance, which includes the following:
Periodic background media scans (Patrol Read) to find and correct media defects to avoid losing data redundancy
(hot spare drives only)
Use of a Commissioned Hotspare to rebuild a degraded drive group (Commissioned Hotspare drives only)
Update of disk data format (DDF) and other metadata when you make changes to RAID configurations
(Commissioned Hotspare drives and unconfigured drives)
NOTE
If your controller does not support this option, the
Power Settings
field does not appear.
Follow these steps to change the power-save setting.
1.
Select a controller icon in the
Physical
tab or the
Logical
tab in the left panel of the
MegaRAID Storage
Manager
window.
2.
Select
Go To > Controller > Manage Power Settings
from the menu bar.
The
Manage Power Save Settings
dialog appears.
Figure 166 Manage Power Save Settings
3.
Select the
Unconfigured Drives
check box to let the controller enable the unconfigured drives to enter the
Power-Save mode.
4.
Select the
Hot spare Drives
check box to let the controller enable the Hot spare drives to enter the Power-Save
mode.
5.
Select the drive standby time (Alt+D) using the drop-down list from the
Drive standby time
field.
Summary of Contents for ThinkServer RD650
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