System maintenance switch, Nmi functionality – HP ProLiant DL380 G7 Server User Manual
Page 15
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Component identification 15
Item
Description
18
SAS connector A
19
SAS connector B
20
Cache module connector
21
Fan connector 1
22
Fan connector 2
23
Fan connector 3
24
Fan connector 4
25
Fan connector 5
26
Fan connector 6
System maintenance switch
Position
Default
Function
S1
Off
Off = iLO 3 security is enabled.
On = iLO 3 security is disabled.
S2
Off
Off = System configuration can be
changed.
On = System configuration is locked.
S3
Off
Reserved
S4
Off
Reserved
S5
Off
Off = Power-on password is enabled.
On = Power-on password is disabled.
S6
Off
Off = No function
On = Clear NVRAM
S7
—
Reserved
S8
—
Reserved
S9
—
Reserved
S10
—
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 problems, such as hangs in operating
systems, device drivers, and applications. Many crashes freeze a system, and the only available action for
administrators is to cycle the system power. Resetting the system erases any information that could support