Dell PowerEdge C5230 Dell Systems Hardware Owners Manual - Page 61
Error Handling, Error Handling and Logging
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Error Handling This chapter defines the following error handling features: • Error Handling and Logging • Error Messages and error code Error Handling and Logging This section defines how errors are handled by the system BIOS, including a discussion of the role of the BIOS in error handling and the interaction between the BIOS, platform hardware,and server management firmware with regard to error handling. In addition, error-logging techniques are described. Error Sources and Types One of the major requirements of server management is to correctly and consistently handle system errors. System errors that can be enabled and disabled individually or as a group can be categorized as follows: • PCI Express bus error • Memory single- and multi-bit errors • Errors detected during POST, logged as POST errors Sensors are managed by the BMC. The BMC is capable of receiving event messages from individual sensors and logging system events. For more information on BMC logged errors, see the BMC Specification. Error Logging via SMI Handler The SMI handler is used to handle and log system level events that are not visible to the server management firmware. The SMI handler pre-processes all system errors, even those that are normally considered to generate an NMI. The SMI handler sends a command to the BMC to log the event and provides the data to be logged. For example, the BIOS programs the hardware to generate an SMI on a single-bit memory error and logs the DIMM number into the system event log. After BIOS finishes logging the error into BMC, it will assert the NMI if needed. Using the System Setup Program 61