HP Integrated Lights-Out - Manual (Page 118)

Using iLO 2 118
• Automatically Power On Server enables iLO 2 to turn on a server when power is applied, such as
when the server is plugged in, or when a UPS is activated after a power outage. You must have
Virtual Power and Reset privilege to alter this setting.
If power is unexpectedly lost while the server is powering up, the server always powers back on,
even if Automatically Power On Server is set to No.
• Power On Delay is used to stagger server power-on in a data center. Blade servers are governed by
the rack infrastructure and do not support a power-on delay. Power On Delay does not interfere with
the power button.
The delay occurs before the server is powered-on by iLO 2, including automatic power-on and
power restore. Some servers cannot enforce the delay under the power restore case. iLO 2 firmware
requires roughly 10 seconds before server power on can take effect. You must have Virtual Power
and Reset privilege to alter this setting.
Server power settings
The Power Regulator for ProLiant feature enables iLO 2 to dynamically modify processor frequency and
voltage levels based on operating conditions to provide power savings with minimal effect on
performance. Processors that support this feature have predefined voltage and frequency states, known as
p-states. The software can dynamically switch the processor from one p-state to another. P-0 is the highest
frequency/voltage combination supported by the processor. Modifying the processor p-state based on
CPU utilization enables significant power savings with minimal performance degradation by reducing the
voltage and frequency on the processor when the system is idle, and increasing the voltage and
frequency on the processor when needed.
The Power Management Settings page enables you to view and control the power regulator mode of the
server. You must have the Configure iLO 2 Settings privilege to change this setting.
• The Power Regulator for ProLiant section has the following options:
o Enable HP Dynamic Power Savings Mode sets the processor to dynamically set the power level
based on usage.
o Enable HP Static Low Power Mode sets the processor to minimum power.