When the server boots, system firmware checks the memory configuration against the rules described in Memory Riser and DIMM Configuration. Any violations of these rules produce a general error message:
Please refer to the service documentation for supported memory configurations.
In some cases, the server boots a degraded state:
WARNING: Running with a nonstandard DIMM configuration. Refer to service document for details.
In other cases, the configuration error is fatal:
Fatal configuration error - forcing power-down
In addition to these general memory configuration errors, one or more rule-specific messages is displayed, indicating the type of configuration error detected. To identify the DIMMs affected, use the fmadm faulty command as described in Checking for Faults.