Server component identification 13
System maintenance switch
Position Default Function
S1 Off Off = iLO security is enabled.
On = iLO 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 = No function
On = Clears power-on password and
administrator password
S6 Off Off = No function
On = Clear NVRAM.
S7 Off Reserved
S8 Off 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 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.
