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Server component identification 72
Non-maskable interrupt switch
Crash dump analysis is an essential part of eliminating reliability problems such as hangs or crashes in operating
systems, device drivers, and applications. Crashes can freeze a system, requiring you to do a hard reset. Resetting
the system erases any information that supports root cause analysis.
Systems running supported Microsoft operating systems experience a blue screen trap when the operating system
crashes. When this happens, Microsoft recommends that system administrators perform a non-maskable interrupt
(NMI) event by pressing a dump switch. The NMI event allows a hung system to become responsive.
The server is equipped with an NMI switch that, when pushed, performs a memory dump before performing a hard
reset.
Figure 66 NMI switch
Rear unit identification LED switch
Figure 67 Rear unit identification LED switch
Table 26 Rear unit identification LED switch (1)
LED status Description
On (blue) The switch is activated.
Off The switch is deactivated.
Flashing The system is being remotely accessed.