
LED Indicators, Switches, and Jumpers
Non-Maskable Interrupt Switch (NMI)
Crash dump analysis is an essential part of determining the cause of problems such as
hangs or crashes in operating systems, device drivers, and applications. Many crashes
freeze a system, requiring you to do a hard reset. Resetting the system erases any
information that supports root cause analysis.
When an operating system crashes, system administrators can perform a
non-maskable interrupt (NMI) event by pressing a dump switch. The NMI event
enables a hung system to once again become responsive enough to provide debug
information.
The NMI switch is used ONLY in the event of a service emergency that requires a
complete data dump in preparation for recovering the system from a catastrophic
event. Refer to Figure E-6 for location of the NMI switch.
Figure E-6: Non-Maskable Interrupt switch
HP ProLiant ML350 Generation 3 Server Setup and Installation Guide
E-11
HP CONFIDENTIAL
Writer: Richard O. Heath File Name: k-appe LED Indicators, Switches, and Jumpers.doc
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