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Troubleshooting
NMI functionality
An NMI crash dump enables administrators to create crash dump files when a system is hung and not
responding to traditional debugging methods.
An analysis of the crash dump log is an essential part of diagnosing reliability problems, such as hanging
operating systems, device drivers, and applications. Many crashes freeze a system, and the only
available action for administrators is to cycle the system power. Resetting the system erases any
information that could support problem analysis, but the NMI feature preserves that information by
performing a memory dump before a hard reset.
To force the OS to initiate the NMI handler and generate a crash dump log, the administrator can use the
iLO Generate NMI feature.
Troubleshooting resources
Troubleshooting resources are available for G2 server products in the following documents:
Troubleshooting Guide for Hitachi Advanced Server HA800 G2 servers provide procedures for
•
resolving common problems and comprehensive courses of action for fault isolation and
identification, issue resolution, and software maintenance.
•
Error Message Guide for Hitachi Advanced Server HA800 G2 servers provide a list of error
messages and information to assist with interpreting and resolving error messages.
Battery replacement
If the server no longer automatically displays the correct date and time, you may need to replace the
battery that provides power to the real-time clock.
WARNING: The computer contains an internal lithium manganese dioxide, a vanadium pentoxide, or
an alkaline battery pack. A risk of fire and burns exists if the battery pack is not properly handled. To
reduce the risk of personal injury:
Do not attempt to recharge the battery.
•
Do not expose the battery to temperatures higher than 60°C (140°F).
•
Do not disassemble, crush, puncture, short external contacts, or dispose of in fire or water.
•
Replace only with the spare designated for this product.
•
To remove the component:
1. Power down the server.
2. Remove all power:
Hitachi Advanced Server HA820 G2 User Guide
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