Reference Guide

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
operation?
What is the
Purpose?
(e.g. boot
code)
How is data
written to
this
memory?
How is memory
write- protected?
How is
memory
cleared?
BOSS_IDSDM
iDSDM (uSD1,
uSD2)
non-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.