Dell PowerEdge FC640 User Manual

Item

Non­Volatile
or
Volatile

Quantity

Reference
Designator

Size

Type

Can user
programs or
operating system
write data during
normal
operation?

Purpose

How is data
added to the
memory?

How is the memory
write protected?

How is the memory cleared?

Planar

PCH Internal
CMOS RAM

Non­Volatile

1

U_PCH

256
Bytes

Battery­backed
CMOS
RAM

No

Real-time clock
and BIOS
configuration
settings

BIOS

N/A – BIOS only
control

1) Set NVRAM_CLR jumper to
clear BIOS configuration settings at
boot and reboot system.

2) Power off the system, remove
coin cell battery for 30 seconds,
replace battery and then power
back on.

3) Restore default configuration in
F2 system setup menu.

BIOS Password

Non­Volatile

1

U_LBG

16
bytes

Battery­backed
CMOS
RAM

Yes

Password to
change BIOS
settings

Keyboard

N/A

Place the shunt on J_EN_PASSWD
jumper pins 1 and 2.

Statement of Volatility – Dell EMC PowerEdge FC640 and M640

The Dell EMC PowerEdge FC640 and M640 contain both volatile and non-volatile (NV) components. Volatile components lose their data after removal of power from the
component. Non-volatile components continue to retain their data even after the power has been removed from the component. Configuration option information
(pertinent to options such as microprocessors, remote access controllers, and storage controllers) is available by component separately. The following components are
present in the PowerEdge R640 servers.

06 - 2017

BIOS SPI Flash

Non­Volatile

1

U_SPI_BIO
S1

32 MB

SPI Flash

No

Boot code,
system
configuration
information,
UEFI
environment,
Flash descriptor,
ME

SPI interface via
PCH

Software write
protected

Not possible with any utilities or
applications and system is not
functional if corrupted or removed.

BIOS Recovery
SPI Flash

Non­Volatile

1

U_REC_SP
I_BIOS

16 MB

SPI Flash

No

Boot code,
system
configuration
information,
UEFI
environment,
Flash descriptor,
ME

SPI interface via
PCH

Software write
protected

Not possible with any utilities or
applications and system is not
functional if corrupted or removed.

iDRAC SPI
Flash

Non­Volatile

1

U_UBOOT

4 MB

SPI Flash

No

iDRAC Uboot
(bootloader),
server
management
persistent store
(i.e. IDRAC MAC
Address, iDRAC
boot variables),
lifecycle log
cache, virtual
planar FRU and
EPPID, rac log,
system event
log, JobStore,
iDRAC Secure
boot code.

SPI interface via
iDRAC

Embedded iDRAC
subsystem firmware
actively controls sub
area based write
protection as
needed.

The user cannot clear memory
completely. However, user data,
lifecycle log and archive, SEL, and
fw image repository can be cleared
using Delete Configuration and
Retire System, which can be
accessed through the Lifecycle
Controller interface.

BMC EMMC

Non­Volatile

1

U_EMMC1

8 GB

eMMC
NAND
Flash

No

Operational
iDRAC FW,
Lifecycle
Controller (LC)
USC partition,
LC service
diags, LC OS
drivers, USC
firmware

NAND Flash
interface via
iDRAC

Embedded FW write
protected

The user cannot clear memory
completely. However, user data,
lifecycle log and archive, SEL, and
fw image repository can be cleared
using Delete Configuration and
Retire System, which can be
accessed through the Lifecycle
Controller interface.

System CPLD
RAM

Non­Volatile

1

U_CPLD1

1 KB

RAM

No

Not utilized

Not utilized

Not accessible

Not accessible

System Memory

Volatile

Up to 8

per CPU

CPU1:
DIMMA0/A1
/B0/C0/D0/
D1/E0/F0
CPU2:
DIMMG0/G
1/H0/I0/J0/J
1/K0/L0

Up to
32GB
per
DIMM

DRAM

Yes

System OS RAM

System OS

OS Control

Reboot or power down system
Internal USB
Key

Non­Volatile

Up to 1

J_INTER_U
SB3

Varies
(not
factory
installe
d)

Flash

Yes

General purpose
USB key drive

USB interface via
PCH. Accessed
via system OS

No write protect

Can be cleared in system OS

Trusted Platform
Module (TPM,
TPM 2.0 only)

Non­Volatile

1

CN6

128
Bytes

EEPROM

Yes

Storage of
encryption keys

Using TPM
Enabled operating
systems

SW write protected

F2 Setup option