Nmi functionality, System board leds – HP ProLiant ML310 G5p Server User Manual
Page 13
Component identification 13
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 use the iLO
Virtual NMI feature.
For more information, see the white paper on the HP website
System board LEDs
Item
LED description
Status
1
Processor failure
Amber = A multibit error has occurred.
Off = Normal
2
PPM failure
Amber = PPM has failed.
Off = Normal
3
Processor heatsink
fan failure
Amber = Processor heatsink fan has failed or is
missing.
Off = Normal
4
Reserved
—
5
Reserved
—
6
PCI fan failure
Amber = PCI fan has failed or is missing.
Off = Normal
7
Overtemperature
Amber = System has reached a cautionary or
critical temperature level.
Off = Normal