Reference Guide

Statement of Volatility – Dell EMC PowerEdge MX840c
The Statement of Volatility provides you the information related to volatile and non-volatile components of different configurations of Dell EMC PowerEdge servers.
Volatile components lose their data when power cord is removed from the system, whereas, non-volatile components continue to retain their data when the power has
been removed from the component.
The following table provides information of different configurations of the PowerEdge MX840c.
Item
Non-
Volatile or
Volatile
Quantity
Reference
Designator
Size of
memory
Type of
memory
(e.g. Flash
PROM,
EEPROM)
Can user programs
or operating
system write data
to it during normal
operation?
What is the
Purpose?
(e.g. boot
code)
How is data
written to
this
memory?
How is
memory write-
protected?
How is memory
cleared?
Planar
PCH Internal
CMOS RAM
Non-Volatile
1
U_PCH
256 Bytes
Battery-backed
CMOS RAM
No
Real-time clock
and BIOS
configuration
settings
BIOS
N/A – BIOS only
control
Perform the following
steps:
1) Set NVRAM_CLR jumper
to clear BIOS configuration
settings at boot and reboot
system; 2) AC power off
system, remove coin cell
battery for 30 seconds,
replace battery and power
back on; 3) restore default
configuration in F2 system
setup menu.
BIOS Password
(part of PCH
internal CMOS
RAM)
16 bytes
(out of 256 bytes
used for PCH
Internal CMOS
RAM)
Yes
Password to
change BIOS
settings
Keyboard
N/A – BIOS only
control
1) Place shunt on
J_PSWD_NVRAM jumper
pins 4 and 6.
2) AC power off is required
after placing the shunt.