System Maintenance Switch; Nmi Jumper - HPE ProLiant SL270s Gen8 User Manual

System maintenance switch

Position
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S12
To access the redundant ROM, set S1, S5, and S6 to on.
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 jumper

The NMI jumper allows administrators to perform a memory dump before performing a hard reset. Crash
dump analysis is an essential part of eliminating reliability problems, such as hangs or crashes in OSs,
device drivers, and applications. Many crashes can freeze a system, requiring you to do a hard reset.
Resetting the system erases any information that would support root cause analysis.
Systems running Microsoft® Windows® experience a blue-screen trap when the OS crashes. When this
happens, Microsoft® recommends that system administrators perform an NMI event by temporarily
shorting the NMI header with a jumper. The NMI event enables a hung system to become responsive
again.
Default Function
Off Off = iLO 4 security is enabled.
On = iLO 4 security is disabled.
Off Off = System configuration can be
changed.
On = System configuration is locked.
Off Reserved
Reserved
Off
Off Off = Power-on password is enabled.
On = Power-on password is disabled.
Off Off = No function
On = ROM reads system
configuration as invalid.
— Reserved
— Reserved
Reserved
—
— Reserved
— Reserved
— Reserved
Component identification 11