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Contents 75
System Switches
NMI button (SW5)
If the system crashes or stops operating, you can momentary press the NMI button (SW5) to manually
force the server to issue a Non-Maskable Interrupt (NMI). This will perform a memory dump—writing
the contents in the server's CPU registers and system memory to a network server or to diskettes. This
memory dump can later be analyzed to determine the cause of the problem. By default, the NMI
switch is always disabled.
Figure 71 NMI button
NOTE: Use of the NMI button is not supported in all NOS. As of the present, NMI implementation is
not available for systems running on Solaris and Linux operating systems.
Clear CMOS Button (SW4)
The system board has a system configuration (CMOS) button (SW4). To clear system configuration,
remove AC power and press the CMOS button for seconds.
Figure 72 CMOS button