Reference Guide

ManualsBrandsDell ManualsC SeriesPowerEdge R940

07 - 2017

Statement of Volatility – Dell EMC PowerEdge R940

The Dell EMC PowerEdge R940 contain both volatile and non-volatile (NV) components. Volatile components lose their data immediately upon removal of power from

the component. Non-volatile components continue to retain their data even after the power has been removed from the component. Components chosen as user-

definable configuration options (those not soldered to the motherboard) are not included in the Statement of Volatility. 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 R940 servers.

Item

Non-

Volatile 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

Non-

Volatile

U_PCH

256 Bytes

Battery-

backed

CMOS

RAM

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

Non-

Volatile

U_PCH

256 bytes

Battery-

backed

CMOS

RAM

Yes

Password to

change BIOS

settings

Keyboard

N/A

1) Place shunt on

J_PSWD_NVRAM jumper pins 2

and 4

2) AC power off is required after

placing the shunt.

3) AC power on with the shunt in

place and then can be removed

Summary of content (10 pages)

PAGE 1
Statement of Volatility – Dell EMC PowerEdge R940 The Dell EMC PowerEdge R940 contain both volatile and non-volatile (NV) components. Volatile components lose their data immediately upon removal of power from the component. Non-volatile components continue to retain their data even after the power has been removed from the component. Components chosen as user definable configuration options (those not soldered to the motherboard) are not included in the Statement of Volatility.
PAGE 2
Primary BIOS SPI Flash NonVolatile 1 U_SPI_BIO S 32 MB SPI Flash No Boot code SPI interface via Software write PCH protected Not possible with any utilities or applications and system is not functional if corrupted or removed The user cannot clear memory iDRAC Non- SPI Flash Volatile 1 U_UBOOT 4 MB SPI Flash No Embedded iDRAC completely.
PAGE 3
System CPLD Power on Volatile 1 U_CPLD1 92 KB RAM No RAM System CPLD FLASH System Firmware update Firmware NonVolatile 1 U_CPLD1 256 KB CPU<2:1>_ Up to 128 CH<3:0>_D GB per <2:0> DIMM BIOS Security Protocols Vendor is Lattice and the programming tool is called Diamond FLASH No Not utilized Not utilized Not accessible Not accessible DRAM Yes System OS RAM System OS OS Control Reboot or power down system When system Neither system nor initiates a Save OS can access the (A
PAGE 4
Recovery Non- BIOS SPI Volatile 1 U_REC_SP I_BIOS 16 MB PEM FRU Non- 1 U_FRU 512 Bytes image Volatile CPU Non- Vcore Volatile SPI Flash No Recovery image I2C No FRU SPI interface via iDRAC No write protect Cannot be cleared by the user Hardware strapping Cannot be cleared by the user No write protect Cannot be cleared by the user No write protect Cannot be cleared by the user Cannot be cleared by the user Processor Expansion Module (PEM) EEPROM 2 EU_CPU3_ EU_CPU4_ s VR N
PAGE 5
24x2.5" Exp/Backp lane NVSRAM Non- memory Volatile 1 U_NVSRA 1 MB FLASH No M FW configuration Common Flash Hardware strapping Cannot be cleared by the user data memory Interface Hardware strapping Cannot be cleared by the user Hardware strapping Cannot be cleared by the user Hardware strapping Cannot be cleared by the user I2C interface via Program write Cannot be cleared by the user iDRAC protect bit Configuration ROC writes No write protect.
PAGE 6
SPD Non- 1 U22 256 Bytes SPD No Volatile Memory Pre-programmed No write protect. Not Cannot be cleared with existing configuration before assembly visible to Host tools available to the customer data FLASH Non- 1 U1086 16 MB FLASH No Card firmware Volatile Processor Pre-programmed No write protect. Not Cannot be cleared with existing before assembly.
PAGE 7
Serial Non- Boot ROM volatile 1 U1020 8 KB Serial No Boot loader Boot ROM Pre-programmed No write protect. Not Cannot be cleared with existing before assembly visible to Host tools available to the customer Processor Flash Non- 1 U3 16 MB FLASH No Card firmware volatile Pre-programmed No write protect. Not Cannot be cleared with existing before assembly.
PAGE 8
system information.
PAGE 9
internally connected, nonremovable USB mass storage device SPI Flash Non- 1 U2 1 MB SPI Flash Volatile SPI flash is only Boot firmware User can initiate a There is no iDRAC may issue a clear command indirectly storage, firmware update mechanism provided to erase all contents of the SPI connected to configuration of the IDSDM to iDRAC to write NOR, but doing this will leave the iDRAC. iDRAC and state data device. any SPI NOR area IDSDM non-functional can read any for IDSDM.
PAGE 10
2)During runtime, by I2C Proprietary Command Protocol PSU Microcontr Non- oller Volatile Up to 3 Microchip Up to 64 Flash Report PSU The data is flash Using signature and Before firmware update, the KB PROM Yes information and via Dell Update manufacture key to memory will be clear and control firmware Package(DUP) protect memory write EEPROM NOTE: For any information that you may need, direct your questions to your Dell Marketing contact. ______________ © 2017 Dell Inc.