HP Integrated Lights-Out 4 - Manual (Page 188)

2. Select a group from the Selected Group menu.
The grouped servers are listed by power state with a counter that shows the total number of
servers in each state.
All of the systems in the selected group will be affected by the changes you make on this page.
For information about viewing the list of affected servers, see
“Viewing servers affected by
the Virtual Power Button” (page 188) .
3. Do one of the following:
•
To change the power state for servers that are in the ON or Reset state, click one of the
following buttons on the left side of the page:
◦ Momentary Press —The same as pressing the physical power button.
Some operating systems might be configured to initiate a graceful shutdown after a
momentary press, or to ignore this event. HP recommends using system commands
to complete a graceful operating system shutdown before you attempt to shut down
by using the Virtual Power button.
◦ Press and Hold—The same as pressing the physical power button for 5 seconds and
then releasing it.
The servers in the selected group are powered off as a result of this operation. Using
this option might circumvent the graceful shutdown features of the operating system.
This option provides the ACPI functionality that some operating systems implement.
These operating systems behave differently depending on a short press or long press.
◦ Reset—Forces the servers in the selected group to warm-boot: CPUs and I/O resources
are reset. Using this option circumvents the graceful shutdown features of the operating
system.
◦ Cold Boot—Immediately removes power from the servers in the selected group.
Processors, memory, and I/O resources lose main power. The servers will restart
after approximately 6 seconds. Using this option circumvents the features for graceful
shutdown of the operating system.
•
To change the power state for servers that are OFF, click the Momentary Press button on
the right side of the page. This button is labeled Power On.
NOTE: The Press and Hold, Reset, and Cold Boot options are not available for servers
that are OFF.
A confirmation dialog box appears.
4. Click OK to proceed with the Virtual Power Button push.
iLO displays a progress bar while the grouped systems respond to the Virtual Power Button
push. The progress bar indicates the number of servers that successfully accepted the command.
The Command Results section displays the command status and results, including error messages
related to the Virtual Power Button push.
Viewing servers affected by the Virtual Power Button
The Affected Systems table provides the following details about the servers that will be affected by
a Virtual Power Button push.
•
Server—The server name defined by the host operating system.
•
Power—The server power state (ON or OFF).
•
UID—The state of the UID. The UID helps you identify and locate a system, especially in
high-density rack environments. The possible states are UID ON, UID OFF, and UID BLINK.
188 Using iLO