02 - 2013
Statement of Volatility – Dell PowerEdge R420 Dell PowerEdge R420 contains both volatile and non-volatile (N V) c om ponents. 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) ar e n ot in cl u d ed in t he St at ement of Volatility.
Configuration option information (pertinent to options such as microprocessors, remote access controllers, and
storage controllers) is available by component separately. The following NV components are present in the
PowerEdge R420 server.
Item Non-
Volatile or
Volitile
Quantity Reference Designator Size
Planer
PCH Internal CMOS RAM Non-Volatile 1 U39 256 Bytes
BIOS SPI Flash Non-Volatile 1 U4-1 8 MB
iDRAC SPI Flash Non-Volatile 1 U22-1 4 MB
BMC EMMC Non-Volatile 1 U45 2 GB
System CPLD RAM Volatile 1 U19 8kb
System Memory Volatile Up to 6 per
CPU CPU1: DIMM1~DIMM6,
CPU2: DIMM7~DIMM12 Up to 32GB per
DIMM
Power Supplies
PSU FW Non-Volatile 1 per PSU Varies by part number Up to 2MB. Varies by
part number
4x3.5" Backplane
SEP internal flash Non-Volatile 1 U_SEP
Flash:32KB + 4KB
EEPROM: 1KB
8x2.5" Backplane
SEP internal flash Non-Volatile 1 U3(SEP) Flash:32KB + 4KB
EEPROM: 1KB