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2 Using power, controls, jumpers, switches, and
indicators
This chapter describes the power features, how to turn on and turn off the blade server, what the
controls and indicators mean, and where the system board jumpers and switches are located and how
to use them.
Turning on the blade server
After you connect the blade server to power through the SBCE unit, the blade server can start in any
of the following ways:
• You can press the power-control button on the front of the blade server (behind the control panel
door) to start the server.
✏ NOTE
Wait until the power-on LED on the blade server flashes slowly before pressing the blade
server power-control button. During this time, the service processor in the management
module is initializing; therefore, the power-control button on the blade server does not
respond.
✏ NOTE
While the blade server is powering up, the power-on LED on the front of the server is lit.
See “Understanding the control panel and LEDs” on page 13 for the power-on LED states.
• If a power failure occurs, the SBCE unit and then the blade server can start automatically when
power is restored if the blade server is configured through the management module to do so.
• You can turn on the blade server remotely by means of the service processor in the management
module.
• If your operating system supports the Wake on LAN feature and the blade server power-on LED
is flashing slowly, the Wake on LAN feature can turn on the blade server, if the Wake on LAN
feature has not been disabled through the management-module Web interface.