Error Handling Summary; Reset Scenarios - Sun Microsystems SPARC Enterprise T1000 Administration Manual

Error Handling Summary

Error handling during the power-on sequence falls into one of the following three
cases:
If no errors are detected by POST or OpenBoot Diagnostics, the system attempts
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to boot if auto-boot? is true.
If only nonfatal errors are detected by POST or OpenBoot Diagnostics, the system
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attempts to boot if auto-boot? is true and auto-boot-on-error? is true.
Nonfatal errors include the following:
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Note – If POST or OpenBoot Diagnostics detect a nonfatal error associated with the
normal boot device, the OpenBoot firmware automatically unconfigures the failed
device and tries the next-in-line boot device, as specified by the boot-device
configuration variable.
If a fatal error is detected by POST or OpenBoot Diagnostics, the system does not
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boot regardless of the settings of auto-boot? or auto-boot-on-error?. Fatal
nonrecoverable errors include the following:
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For more information about troubleshooting fatal errors, refer to the service manual
for your server.

Reset Scenarios

Three ALOM CMT configuration variables, diag_mode, diag_level, and
diag_trigger, control whether the system runs firmware diagnostics in response
to system reset events.
32 Sun SPARC Enterprise T1000 Server Administration Guide • April 2007
Ethernet interface failure.
Serial interface failure.
PCI-Express card failure.
Memory failure. When a DIMM fails, the firmware unconfigures the entire
logical bank associated with the failed module. Another nonfailing logical
bank must be present in the system for the system to attempt a degraded boot.
Note that certain DIMM failures might not be diagnosable to a single DIMM.
These failures are fatal, and result in both logical banks being unconfigured.
Any CPU failed
All logical memory banks failed
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