When you power on the system, the boot process begins under the control of the Integrated Lights Out Manager (ILOM) system console. The system console displays status and error messages generated by firmware-based tests during system startup.
To see these status and error messages, connect a terminal or terminal emulator to the serial management port (SER MGT). For a basic procedure to connect a terminal or terminal emulator, see Power On the System for the First Time.
Integrated Lights Out Manager 3.0 User’s Guide
Integrated Lights Out Manager 3.0 Supplement for the Sun SPARC Enterprise T5440 Server
Sun SPARC Enterprise T5440 Server Administration Guide