Reference Guide

Internal Use - Confidential
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
What is the
Purpose?
(e.g. boot
code)
How is data
written to
this
memory?
How is memory
write- protected?
How is
memory
cleared?
iDRAC SPI
Flash
Non
- Volatile
1
U
59
4 MB
SPI Flash
No
iDRAC
Uboot
(bootloader)
SPI interface
via
iDRAC
Embedded
iDRAC
subsystem
firmware
actively
controls
sub
area based
write
protection
as
needed.
Not
completely user
cleara
ble; however, user
data, lifecycle
log and
archive,
SEL, FW image
repository can be
cleared via Delete
Configuration and
Retire System,
accessible in
Lifecycle
Controller
interface
BMC eMMC
Non
-Volatile
1
U
4031
8GB
,16GB
eMMC
NAND
Flash
No
Operational
iDRA
C FW,
Lifecycle
Controller
(LC)
USC partition,
LC
service diags, LC
OS drivers, USC
firmware
NAND
Flash
interface via
iDRAC
Embedded
FW write
protected
Not completely user
clearable; however,
user
data,
lifecycle log and
archive, SEL,
FW image
repository c
an be cleared
via Delete
Configuration
and
Retire System,
accessible
in Lifecycle
Controller
interface
iDRAC DDR
Volatile
1
U
4033
4Gb
,8Gb
DRAM
No
iDRAC
local
memory
iDRAC
Firmware
No write
protect
Remove
A/C
iDRAC
Volatile
1
U_IDRAC
1
For
CPU: 128KB
+
Reg
isters
Co
-
proc: 64Kb +
Registers
Cache +
registers
No
Processor
cache +
registers
iDRAC
Firmware
No write
protect
Remove
A/C