Power off the server
The server remains in a standby state when it is connected to a power source. To remove all power from the server (power-on LED off), you must disconnect all power cables.
To place the server in a standby state (power-on LED flashes once per second):
Start an orderly shutdown using the operating system (if supported by your operating system).
Press the power-on button to start an orderly shutdown (if supported by your operating system).
Press and hold the power button for more than 4 seconds to force a shutdown.