Chapter 2. Blade Server Power, Controls, And Indicators; Turning On The Blade Server - IBM eServer BladeCenter JS20 Installation And User Manual

Chapter 2. Blade server power, controls, and indicators

This chapter describes the power features, how to turn on and turn off the blade
server, and what the controls and indicators mean.

Turning on the blade server

Important: To generate faster blade-server startups from the network, connect the
dynamic host configuration protocol (DHCP) server to the Ethernet switch module in
I/O bay 2 in the BladeCenter unit. The system firmware code in the blade server
detects this Ethernet controller first. The Ethernet controller in each blade server is
then associated with the switch module in I/O bay 2.
Notes:
v After you connect the power cords of your BladeCenter unit to the electrical
v While the blade server is powering up, the power-on LED on the front of the
v After an orderly shutdown of the operating system occurs, the Wake on LAN
v Throughout this document, the management-module Web-based user interface is
After you connect the BladeCenter unit to power, the blade server can start in any
of the following ways:
v You can press the power-control button on the front of the blade server (behind
v If a power failure occurs, the BladeCenter unit and then the blade server can
v You can turn on the blade server remotely by means of the service processor in
v If your operating system supports the Wake on LAN feature and it has not been
© Copyright IBM Corp. 2004
outlets, wait until the power-on LED on the blade server flashes slowly before
pressing the blade server power-control button. Before the LED flashes, the
service processor in the BladeCenter management module is initializing, and the
power-control button on the blade server will not respond.
server is lit. See "Blade server controls and LEDs" on page 15 for the power-on
LED states.
feature is permanently enabled in the blade server system firmware code.
Therefore, Enabled is the default setting. The Wake on LAN setting for each
blade server is stored in the management-module nonvolatile random-access
memory (NVRAM). To disable the Wake on LAN feature for one or more blade
servers, use the BladeCenter management-module Web interface. For more
information about the BladeCenter management-module Web interface, see the
BladeCenter Management Module User's Guide on the IBM BladeCenter
Documentation CD.
also known as the BladeCenter management-module Web interface.
the control panel door) to start the server.
start automatically when power is restored (if the blade server is configured
through the BladeCenter management module to do so).
the BladeCenter management module.
disabled through the BladeCenter management-module Web interface, the blade
server power-on LED is flashing slowly, and the Wake on LAN feature can turn
on the blade server.
13