Controlling server power consumption

Control the server power consumption by adjusting the processor voltage and clock frequency.

About this task

By enabling the power saver mode, the power consumption can be reduced by adjusting the processor voltage and clock frequency. If power saver mode is disabled, the processor voltage and clock frequency are set to their default values.

Note: You can enable this option only when the server firmware is in the standby state or the running state.
To enable this option, you must have one of the following authority levels:
  • Administrator
  • Authorized service provider

To control server power consumption, complete the following steps:

Procedure

  1. On the ASMI Welcome pane, specify your user ID and password, and click Log In.
  2. In the navigation area, expand System Configuration > Power Management > Power Mode Setup.
  3. In the content pane, select any of these options:
    • Disable all modes: Enabling this option allows the processor clock frequency to be set to the fixed, nominal value.
    • Enable Static Power Saver mode: Enabling this option reduces power consumption by lowering the processor clock frequency and voltage to fixed values. This option reduces the power consumption of the system while delivering predictable performance.
    • Enable Dynamic Performance mode: Enabling this option causes the processor frequency to vary based on workload and active core count. As the workload or active core count decrease, the processor uses less power, which enables the frequency to be increased above nominal. During periods of very low utilization, the processor frequency is reduced to save energy. This mode provides consistent performance across all environmental operating conditions.
    • Enable Maximum Performance mode: Enabling this feature causes the processor frequency to vary based on the workload and active core count. As the workload or active core count decrease, the processor uses less power, which enables the frequency to be increased above nominal. In this mode, the allowed socket power is increased to the maximum value, which results in top performance with increased fan noise and higher power consumption. In more stressful environmental conditions, performance may vary.
    Note: Enabling any of the power saver modes causes changes in the processor frequencies, changes in processor use, changes in power consumption, and varying performance.
  4. Click Continue.