A-Class Server Fault Condition Recognition

Overview

The existence of fault conditions are determined by reviewing Front Panel LED Status codes (shown below), or reviewing “Review Console Messages”.

The following subsections describe fault condition review procedures.

Review Front Panel Status LEDs

Front panel LEDs display either normal operation or fault status of the A-Class server. Fault conditions consist of selftest failures and High Priority Machine Check (HPMC) fault conditions. The following table describes what the front panel LED blink patterns indicate:

		LAN LED	Heartbeat LED	Indication
		Random Blink Pattern	Heartbeat Blink Pattern	Normal Operation (HP-UX running)
		Off	Off	2nd Level Cache SIMM fault
		On (Steady)	Off	Memory SIMM fault
		On (Steady	On (Steady)	I/O Subsystem or I/O Board fault
		Off	On (Steady)	System board fault, HPMC or Unknown fault
		Blinking	On (Steady)	I/O HPMC fault
		Blinking opposite of Heartbeat LED	Blinking opposite of LAN LED	Memory HPMC fault (When LAN is ON, Heartbeat is OFF. When Heartbeat is ON, LAN is OFF)
		Off	Blinking	2nd Level Cache HPMC fault

Review Console Messages

Console messages are also used to display fault conditions on the system console if a System Panic or HPMC fault occurs. If the memory dump function is properly configured, a memory dump (core dump) will automatically print to a hard disk file or other designated data storage following a System Panic, HPMC fault, or Transfer Of Control (TOC). Refer to the “A-Class Server Trouble Shooting ” section for more information regarding TOC. If an A3342A HSC Remote Management card (Access Port) is installed, additional system status information, including selftest status messages, can be displayed at the console and, during normal operation (with HP-UX running), system status information can also be displayed by entering a Control B command. HSC Remote Management card system status information appears on the console in the format below.Refer to the “A-Class Server Trouble Shooting ” section for definitions of the data provided by the HSC Remote Management card.

RUN F01F REMOTE: disabled inactive multiple ACCESS FLT: 00

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