NEC iLO 5 User Manual page 164

If the server is off or in POST, the changes will not take effect until POST is complete.
For the Dynamic Power Savings Mode, Static Low Power Mode, and Static High Performance
Mode settings, iLO notifies you that the Power Regulator settings changed.
For the OS Control Mode setting, iLO notifies you that you must reboot the server to
complete the Power Regulator settings change.
When you change from OS Control Mode to any other mode, you must reboot the server to
complete the Power Regulator Settings change.
4. If a reboot is required to complete the change, reboot the server.
Power Regulator modes
Choose from the following modes when you configure the Power Regulator settings:
• Dynamic Power Savings Mode—Automatically varies processor speed and power usage
based on processor utilization. This option allows the reduction of overall power
consumption with little or no impact to performance. It does not require OS support.
• Static Low Power Mode—Reduces processor speed and power usage. This option
guarantees a lower maximum power usage value for the system.
• Static High Performance Mode—Processors will run at maximum power and performance
at all times, regardless of the OS power management policy.
• OS Control Mode—Processors will run at maximum power and performance at all times,
unless the OS enables a power management policy.
Configuring power caps
Prerequisites
• Configure iLO Settings privilege
• An iLO license that supports this feature is installed.
• The server model supports power capping.
See the server user's guide for support information.
Procedure
1. Click Power & Thermal in the navigation tree, and then click the Power Settings tab.
2. Select the Enable power capping check box.
3. Enter the Power Cap Value in watts, BTU/hr, or as a percentage.
The percentage is the difference between the maximum and minimum power values. The
power cap value cannot be set lower than the server minimum power value.
4. Optional: When values are displayed in watts, click Show values in BTU/hr to change the
display to BTU/hr. When values are displayed in BTU/hr, click Show values in Watts to
change the display to watts.
5. Click Apply.
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