HP DL385 HP ProLiant DL385 Generation 2 Server User Guide - Page 15

NMI functionality, Systems Insight Display LEDs and internal health LED combina

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Position S5 S6 S7 S8 Default Off Off Off Off Function Off = Power-on password is enabled. On = Power-on password is disabled. Off = Normal On = ROM treats system configuration as invalid. 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 enables administrators to create crash dump files when a system is hung and not responding to traditional debug mechanisms. Crash dump log analysis is an essential part of diagnosing reliability problems, such as hangs in 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 invoke the NMI handler and generate a crash dump log, the administrator can do any of the following: • Short the NMI jumper pins • Press the NMI switch • Use the iLO Virtual NMI feature For additional information, see the whitepaper on the HP website (http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00797875/c00797875.pdf). Systems Insight Display LEDs and internal health LED combinations When the internal health LED on the front panel illuminates either amber or red, the server is experiencing a health event. Combinations of illuminated system LEDs and the internal health LED indicate system status. Component identification 15

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Component identification 15
Position
Default
Function
S5
Off
Off = Power-on password is enabled.
On = Power-on password is disabled.
S6
Off
Off = Normal
On = ROM treats system configuration as invalid.
S7
Off
Reserved
S8
Off
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 enables administrators to create crash dump files when a system is hung and not
responding to traditional debug mechanisms.
Crash dump log analysis is an essential part of diagnosing reliability problems, such as hangs in
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 invoke the NMI handler and generate a crash dump log, the administrator can do any
of the following:
•
Short the NMI jumper pins
•
Press the NMI switch
•
Use the iLO Virtual NMI feature
For additional information, see the whitepaper on the HP website
(
).
Systems Insight Display LEDs and internal health LED
combinations
When the internal health LED on the front panel illuminates either amber or red, the server is experiencing
a health event. Combinations of illuminated system LEDs and the internal health LED indicate system
status.