IBM JS20 User Guide - Page 23
Blade, server, power, controls, indicators
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UPC - 000435230263
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Chapter 2. Blade server power, controls, 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 Notes: v After you connect the power cords of the BladeCenter unit to the electrical 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. v While the blade server is powering up, the power-on LED on the front of the server is lit. See "The control panel buttons and LEDs" on page 13 for the power-on LED states. v After an orderly shutdown of the operating system occurs, the Wake on LAN 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 and BladeCenter T Management Module User's Guide. v Throughout this document, the management-module Web-based user interface is also known as the BladeCenter management-module Web interface. 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 the control-panel door) to start the server. 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 BladeCenter management module to do so). v You can turn on the blade server remotely by means of the service processor in the BladeCenter management module. v If your operating system supports the Wake on LAN feature and it has not been disabled through the BladeCenter management-module Web interface, the Wake on LAN feature can turn on the blade server. © Copyright IBM Corp. 2006 11
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