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?
IDSDM
iDSDM
(uSD1,
uSD2)
N
on-volatile
2
J_IDSDM_SD
1,
J_IDSDM_SD
2
16GB,
32GB,
64GB
NAND
Flash Yes
Provides mass
storage
Device resides in
host domain; they
are exposed to
the
user via an
internally
connected, non-
removable USB
mass storage
device
physical write
protect
switch
on ACE card
(1)
Card may be
physically removed
and
destroyed or
cleared via
standard
means on a
separate
computer
OR
(2)
User has access to the
card in
the host domain
and may
clear it manually
SPI Flash
Non
-Volatile
1
U_SPI
1MB
SPI
Flash
SPI flash is only
indirectly
connected to
iDRAC. iDRAC
can read any
address in the SPI
flash, but may only
write the primary
firmware storage
area as a part of a
firmware update
procedure
Boot
firmware
storage,
configuration
and
state data
for
IDSDM
User can initiate a
firmware update
of the IDSDM
device.
There is no
mechanism
provided to
iDRAC
to write any SPI
NOR area outside
of
the primary
IDSDM
firmware
region
iDRAC may issue a
clear
command to
erase all
contents of
the SPI NOR,
but
doing this will leave
the IDSDM non
-
functional