HP Integrated Lights-Out 2 User Guide

down the operating system. An operating system shutdown must be initiated using the Remote
Console before using the Virtual Power Button options. The following options are available:
• Momentary Press button provides behavior identical to pressing the physical power button.
• Press and Hold is identical to pressing the physical power button for five seconds and then
releasing it. This option provides the ACPI-compatible functionality that is implemented by
some operating systems. These operating systems behave differently depending upon a short
press or long press. The behavior of this option might circumvent any graceful shutdown
features of the operating system.
• Cold Boot of the system immediately removes power from the system. The system will restart
after approximately six seconds. This option is not available when the server is powered down.
This option circumvents graceful operating system shutdown features.
• Reset System initiates a system reset. This option is not available when the server is powered
down. The behavior of this option might circumvent any graceful shutdown features of the
operating system.
The Power Configuration Settings section enables you control how the remote server powers up
when power is applied. The following options are available:
• 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.
Power management 113