IBM 884015U Maintenance And Troubleshooting Manual

Contents

The server can also be turned on in any of the following ways:v If a power failure occurs while the server is turned on, the server will restartautomatically when power is restored.v If your operating system supports the systems-management software for anoptional Remote Supervisor Adapter II SlimLine, the systems-managementsoftware can turn on the server.v If your operating system supports the Wake on LAN feature, the Wake on LANfeature can turn on the server.Note: When 4 GB or more of memory (physical or logical) is installed, somememory is reserved for various system resources and might be unavailable to theoperating system. The amount of memory that is reserved for system resourcesdepends on the operating system, the configuration of the server, and theconfigured PCI options.Turning off the serverWhen you turn off the server and leave it connected to ac power, the server canrespond to requests from the service processor, such as a remote request to turnon the server. To remove all power from the server, you must disconnect it from thepower source.Some operating systems require an orderly shutdown before you turn off the server.See your operating-system documentation for information about shutting down theoperating system.Statement 5CAUTION:The power-control button on the device and the power switch on the power supply donot turn off the electrical current supplied to the device. The device also might havemore than one power cord. To remove all electrical current from the device, ensurethat all power cords are disconnected from the power source.12The server can be turned off in any of the following ways:v You can turn off the server from the operating system, if your operating systemsupports this feature. After an orderly shutdown of the operating system, theserver will be turned off automatically.v You can press the power-control button to start an orderly shutdown of theoperating system and turn off the server, if your operating system supports thisfeature.v If the operating system stops functioning, you can press and hold thepower-control button for more than 4 seconds to turn off the server.v The service processor can turn off the server as an automatic response to acritical system failure.v You can turn off the server through a request from the service processor.Chapter 1. Introduction 7