Sun Microsystems T6300 manual Reset Scenarios, Automatic System Recovery User Commands

■If a fatal error is detected by POST or OpenBoot Diagnostics, the system does not boot regardless of the settings of auto-boot?or auto-boot-on-error?. Fatal nonrecoverable errors include the following:

■Any CPU failure

■Any logical memory bank failure

■Flash RAM cyclical redundancy check (CRC) failure

■Critical field-replaceable unit (FRU) PROM configuration data failure

■Critical system configuration SEEPROM read failure

■Critical application-specific integrated circuit (ASIC) failure

Reset Scenarios

Three ALOM configuration variables, diag_mode, diag_level, and

diag_trigger, control whether the system runs firmware diagnostics in response to system reset events.

The standard system reset protocol bypasses POST completely unless the virtual keyswitch or ALOM variables are set as follows:

TABLE 2-3Virtual Keyswitch Setting for Reset Scenario

Keyswitch	Value
virtual keyswitch	diag

TABLE 2-4ALOM Variable Settings for Reset Scenario

Variable	Value	Default
diag_mode	normal or service	normal
diag_level	min or max	min
diag_trigger	power-on-reset error-reset	power-on-reset

Therefore, ASR is enabled by default. For instructions, see “Enabling and Disabling Automatic System Recovery” on page 25.

Automatic System Recovery User Commands

ALOM commands are available for enabling and disabling ASR and for obtaining ASR status information.

For more information, see:

24 Sun Blade T6300 Server Module Administration Guide • April 2007