Sun Microsystems 280R manual Keyswitch Settings

Keyswitch Settings

The front panel keyswitch controls the power-on modes of the system. The following table describes the function of each switch setting.

Keyswitch Setting Icon Description

Power-On/Off

Diagnostics

Locked

Off

This setting enables the system’s Power button to power on, or to power off, the system.

If Solaris software is running, quickly pressing and releasing the Power button initiates a software system shutdown.

If the system hangs, holding the Power button down for four seconds while the keyswitch is in this position will cause an immediate hardware power off.

This setting ensures that the power-on self-test (POST) and the OpenBoot Diagnostics will run at system startup. Level max OpenBoot Diagnostics are run if the system is started with the keyswitch in this position. All diagnostic messages are printed to the system console.

This setting enables the system’s Power button to power on, or to power off, the system.

This setting disables the system’s Power button and also locks the front doors, preventing access to the disk drives and to the power supplies.

The Locked position is the recommended setting for normal day-to-day operation of the system.

This setting places the system in power-off mode immediately by turning off any power supply and placing it in standby mode of 5 volts DC output. All other power supply voltages are turned off to all other internal system components except to the circuitry on the power distribution board, to the I2C bus circuitry on the FC-AL backplane, to the RSC card circuitry, and to selected circuits on the main logic board.

This setting disables the server’s Power button.

This setting does not allow the RSC card to restart the server. However, the RSC card can still report its data to the software using the system’s standby power.

Chapter 1 System Overview 9