You can use the Oracle ILOM web interface to remotely power off the server to standby power mode.
To log in, open a web browser and enter the IP address of the server SP. Log in as root or a user with administrator privileges. For more information, refer to the Oracle X5 Series Servers Administration Guide at http://www.oracle.com/goto/x86AdminDiag/docs.
The Summary screen appears.
Power off options are also available under Host Management > Power Control.
See Also
Oracle Integrated Lights Out Manager 3.2.x Documentation Library at: http://www.oracle.com/goto/ILOM/docs