Reference Guide

Item
Volatile or Non-
Volatile
Quantity
Reference
designator
Size
Planner
IDSDM card
IDSDM SPI flash
Non-Volatile
1
U5
8 Mb
rSPI Flash
Non-Volatile
1
U15
4 MB
vFlash Card
rSPI Flash
Non-Volatile
1
U15
4 MB
1G LOM Riser Card
i350 SPI EEPROM
Non-Volatile
1
U1
512 KB
Flash
Non-Volatile
1
U4
8 Mb
10 G LOM Riser card
Broadcom SPI flash
Non-Volatile
1
U5
16 Mb
Item
Type (e.g. Flash PROM, EEPROM)
Can user programs
or operating
system write data
to it during normal
operation?
Purpose? (e.g. boot
code)
Planer
PCH Internal CMOS RAM
Battery-backed CMOS RAM
Yes
Real-time clock and
BIOS configuration
settings
BIOS SPI Flash
SPI Flash
Yes
Boot code, system
configuration
information, UEFI
environment, Flash
Disceptor, ME
iDRAC SPI Flash
SPI Flash
Yes
iDRAC Uboot
(bootloader), server
managent persistent
store (i.e. IDRAC MAC
Address, iDRAC boot
variables), lifecycle log
cache, virtual planar
FRU and EPPID, rac log,
System Event Log
BMC EMMC
eMMC NAND Flash
Yes
Operational iDRAC FW,
Lifecycle Controller (LC)
USC partition, LC
service diags, LC OS
drivers, USC firmware
BMC Memory
RAM
Yes
iDRAC RAM