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
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?
Planar
System
Memory:
DCPMM (AEP)
Both
Up to 6
per CPUs
1 and 2
(12 total in
system)
CPU<2:1>_C
H<5:0>_D1
Up to 512GB
per DIMM
3DXP
(volatile or
non-volatile
based on
configuratio
n)
Yes
Memory Mode -
High capacity
volatile memory
slightly slower
than DDR
App Direct -
High capacity
non-volatile
memory for
storage tiering
and other
applications
Accessed via
system OS
OS can prevent
writes to 3DXP at
runtime in
response to NFIT
table.
Encryption is
available.
Using BIOS menu
option, select
Cryptographic Erase or
Sanitize based on type
of erase needed
Internal USB
Key
Non-Volatile
Up to 1
J_USB_INT
Varies (not
factory
installed)
Flash
Yes
General
purpose USB
key drive
USB interface
via PCH.
Accessed via
system OS
No write protect
Can be cleared in
system OS
CPU
Volatile
1 or 2
CPU1 / CPU2
Various
Cache +
registers
Yes
Processor
cache +
registers
Various
Various
Remove A/C
iDRAC DDR
Volatile
1
U_IDRAC9_D
RAM1
512Mb
DRAM
No
iDRAC local
memory
iDRAC
Firmware
No write protect
Remove A/C