Turning off the serverWhen you turn off the server and leave it connected to ac power, the server canrespond to remote requests to turn on the server. While the server remainsconnected to ac power, one or more fans (some models) might continue to run. Toremove all power from the server, you must disconnect it from the power 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 5:CAUTION:The power control button on the device and the power switch on the powersupply do not turn off the electrical current supplied to the device. The devicealso might have more than one power cord. To remove all electrical currentfrom the device, ensure that all power cords are disconnected from the powersource.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 If an optional Remote Supervisor Adapter II SlimLine is installed in the server, theserver can be turned off from the Remote Supervisor Adapter II SlimLine userinterface.v The server can turn itself off as an automatic response to a critical systemfailure.16 System x3400 Types 7973, 7974, 7975, and 7976: User’s Guide