Managing Power-Save Settings

Dimmer Switch Technology

Powering drives and cooling drives represent a major cost for data centers. The MegaRAID Dimmer Switch (power save) feature set reduces the power consumption of the devices connected to a MegaRAID controller, which helps to share resources more efficiently and lowers the cost.

Dimmer Switch 1 – Spin down unconfigured disks. This feature is configurable and can be disabled.
Dimmer Switch 2 – Spin down hot spares. This feature is configurable and can be disabled.

Perform the following steps to manage the power-save settings.

In the Controller dashboard, select More Actions > Manage Power Save Settings.
The Manage Power Save Settings dialog appears.
Select the Unconfigured Drives check box to let the controller enable the unconfigured drives to enter the Power-Save mode.
Select the Hot Spare Drives check box to let the controller enable the hot spare drives to enter the Power-Save mode.
Select the drive standby time using the drop-down list from the Drive Standby time: field.

The Drive Standby time: drop-down list is enabled only if any of the check boxes above it are checked. The drive standby time can be 30 minutes, 1 hour, 1.5 hours, or 2 hours through 12 hours.
Click Finish to save the settings.

A confirmation message appears.