Non-Maskable Interrupt Switch; Rear Unit Identification Led Switch - HP ProLiant DL585 Maintenance And Service Manual

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
On (blue)
Off
Flashing
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Description
The switch is activated.
The switch is deactivated.
The system is being remotely accessed.
Server component identification 72