The RAID controller includes Dimmer Switch™ technology that conserves energy by placing certain available online drives into a powersave mode. In a powersave mode, the drives use less energy, and the fan and the enclosure requires less energy to cool and house the drives. Also, this technology helps avoid application time-outs caused by spin-up delays and drive wear caused by excessive spin-up/down cycles.You can use the Power Settings field in MegaRAID Storage Manager software to choose whether to allow unconfigured drives or hot spares to enter a powersave mode.
When they are in the powersave mode, unconfigured drives and drives configured as hot spares (dedicated or global) can be spun down. When spun down, the drives stay in powersave mode except for periodic maintenance, including:
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■ Update of Disk Data Format (DDF) and other metadata when you make changes to RAID configurations (hot spare drives and unconfigured drives)
NOTE
If your controller does not support this option, the Power Settings field does not appear.
1. Select a controller icon in the Physical tab or the Logical tab in the left panel of the MegaRAID Storage Manager main menu window.
2. Select Go To>>Controller>>Power Settings from the menu bar.The Power Settings dialog appears, as shown in the following figure.Figure 39 Powersave Mode Checkbox
3. The second Power Settings dialog appears, as shown in the following figure.Figure 40 Spin Down Time Delay Setting
5. Click OK.Your power settings are saved. In the Physical tab of the MegaRAID Storage Manager main menu window, the nodes for the unconfigured good drives that are spun down appear with - Powersave after their status.
DB09-000202-12 37857-02, Rev M, June 2012 |
Copyright© 2012 by LSI Corporation. All rights reserved. |