HP ProLiant ML10 HP ProLiant ML10 Server User Guide - Page 10

System maintenance switch, NMI functionality, Position, Default, Function

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System maintenance switch Position 1 2 3 4 5 6 7 8 9 10 Default Off Off - - Off Off - - - - Function Off = iLO security is enabled On = iLO security is disabled Off = System configuration can be changed On = System configuration is locked Reserved Reserved Off = Power-on password is enabled On = Power-on password is disabled Off = No function On = Clear NVRAM Reserved Reserved Reserved Reserved When the system maintenance switch position 6 is set to the On position, the system is prepared to erase all system configuration settings from both CMOS and NVRAM. CAUTION: Clearing CMOS and/or NVRAM deletes configuration information. Be sure to properly configure the server or data loss could occur. NMI functionality An NMI crash dump creates a crash dump log before resetting a system which is not responding. Crash dump log analysis is an essential part of diagnosing reliability problems, such as failures of operating systems, device drivers, and applications. Many crashes freeze a system, and the only available action for administrators is to restart the system. Resetting the system erases any information which could support problem analysis, but the NMI feature preserves that information by performing a memory dump before a system reset. To force the system to invoke the NMI handler and generate a crash dump log, do one of the following: • Use the iLO Virtual NMI feature. • Short the NMI header ("System board components" on page 8). For more information, see the HP website (http://www.hp.com/support/NMI). Component identification 10

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Component identification 10
System maintenance switch
Position
Default
Function
1
Off
Off = iLO security is enabled
On = iLO security is disabled
2
Off
Off = System configuration can be
changed
On = System configuration is locked
3
—
Reserved
4
—
Reserved
5
Off
Off = Power-on password is enabled
On = Power-on password is disabled
6
Off
Off = No function
On = Clear NVRAM
7
—
Reserved
8
—
Reserved
9
—
Reserved
10
—
Reserved
When the system maintenance switch position 6 is set to the On position, the system is prepared to erase all
system configuration settings from both CMOS and NVRAM.
CAUTION:
Clearing CMOS and/or NVRAM deletes configuration information. Be sure to
properly configure the server or data loss could occur.
NMI functionality
An NMI crash dump creates a crash dump log before resetting a system which is not responding.
Crash dump log analysis is an essential part of diagnosing reliability problems, such as failures of operating
systems, device drivers, and applications. Many crashes freeze a system, and the only available action for
administrators is to restart the system. Resetting the system erases any information which could support
problem analysis, but the NMI feature preserves that information by performing a memory dump before a
system reset.
To force the system to invoke the NMI handler and generate a crash dump log, do one of the following:
•
Use the iLO Virtual NMI feature.
•
Short the NMI header ("
System board components
" on page
8
).
For more information, see the HP website (
).