IBM HS12 User Guide - Page 23
Turning on the blade server, Power-on LED, Notes - processor
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Note: The power-control button has effect only if local power control is enabled for the blade server. Local power control is enabled and disabled through the management-module Web interface. Power-on LED: This green LED indicates the power status of the blade server in the following manner: v Flashing rapidly: The service processor (BMC) on the blade server is communicating with the management module. v Flashing slowly: The blade server has power but is not turned on. v Lit continuously: The blade server has power and is turned on. Turning on the blade server Use this information to turn on the blade server. After you connect the blade server to power through the BladeCenter unit, 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 the control panel door, see "Blade server controls and LEDs" on page 11) to start the blade server. Notes: 1. Wait until the power-on LED on the blade server flashes slowly before you press the power-control button. While the service processor in the management module is initializing, the power-on LED does not flash, and the power-control button on the blade server does not respond. 2. While the blade server is starting, the power-on LED on the front of the blade server is lit. See "Blade server controls and LEDs" on page 11 for the power-on LED states. v If a power failure occurs, the BladeCenter 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. v You can turn on the blade server remotely by using the management module. v If the blade server is connected to power (the power-on LED is flashing slowly), the operating system supports the Wake on LAN feature, and the Wake on LAN feature has not been disabled through the management module, the Wake on LAN feature can turn on the blade server. Turning off the blade server Use this information to turn off the blade server. When you turn off the blade server, it is still connected to power through the BladeCenter unit. The blade server can respond to requests from the service processor, such as a remote request to turn on the blade server. To remove all power from the blade server, you must remove it from the BladeCenter unit. Shut down the operating system before you turn off the blade server. See the operating-system documentation for information about shutting down the operating system. The blade server can be turned off in any of the following ways: Chapter 2. Power, controls, and indicators 13