Server component identification 83
Item Description
24
PCIe2x4 slot (1)
Power supply connector (4-pin)
26
TPM connector
27
Rear USB connectors (4)
System maintenance switch
Position Default Function
1
Off Off = iLO 3 security is enabled
On = iLO 3 security is disabled
2
Off Off = System configuration can be
changed
On = System configuration is locked
3
— Reserved
4
— Reserved
5
Off Off = Power-on password is enabled
On = Power-on password is disabled
6
Off Off = No function
On = Clear NVRAM
7
— Reserved
8
— Reserved
9
— Reserved
10
— Reserved
When the system maintenance switch position 6 is set to the On position, the system is prepared to erase all
system configuration settings from both CMOS and NVRAM.
CAUTION: Clearing CMOS and/or NVRAM deletes configuration information. Be sure to
properly configure the server or data loss could occur.
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 issues, such as hangs in operating
systems, device drivers, and applications. When crashes freeze a system, administrators must cycle the
system power. Resetting the system erases any information that support issue analysis, but the NMI feature
preserves that information by performing a memory dump before a hard reset.
The administrator must use the iLO Virtual NMI feature to force the OS to invoke the NMI handler and
generate a crash dump log.
For additional information, see the HP website
(http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00797875/c00797875.pdf).
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