Component identification 11
PCIe expansion slot definitions
Slot number Type
Length
Height Connector link width Negotiable link width
1
PCIe2
Half
Full
x4
x1signal / 25W
2
PCIe2
Half
Full
x8
x1 signal / 25W
3
PCIe3
Half
Full
x8
x8 signal / 25W
4
PCIe3
3/4
Full
x16
x8 signal / 75W
System maintenance switch
Switch
Default
Function
1
Off
Off = No function
On = iLO security is disabled
2
Off
Off = System configuration can be
changed
On = System configuration is locked
5
Off
Off = Power-on password is enabled
On = Power-on password is disabled
6
Off
Off = No function
On = ROM reads configuration as
invalid
3, 4, 7, 8, 9,
10, 11, 12
—
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 creates a crash dump log before resetting a system which is not responding.
Crash dump log analysis is an essential part of diagnosing reliability problems, such as failures of operating
systems, device drivers, and applications. Many crashes freeze a system, and the only available action for
administrators is to restart the system. Resetting the system erases any information which could support
problem analysis, but the NMI feature preserves that information by performing a memory dump before a
system reset.
To force the system to invoke the NMI handler and generate a crash dump log, do one of the following:
•
Use the iLO Virtual NMI feature.
•
Short the NMI header ("
System board components
" on page
9
).
For more information, see the HP website (
http://www.hp.com/support/NMI
).
