Reference Guide

System
CPLD
RAM
Volatile
1
U_CPLD1
92 KB
RAM
No
Power on
System
Firmware
Firmware update
BIOS Security
Protocols
Vendor is Lattice and the
programming tool is called
Diamond
System
CPLD
FLASH
Non-
Volatile
1
U_CPLD1
256 KB
FLASH
No
Not utilized
Not utilized
Not accessible
Not accessible
System
Memory:
RDIMM
and
LRDIMM
Volatile
Up to 12
per CPU
CPU<2:1>_
CH<3:0>_D
<2:0>
Up to 128
GB per
DIMM
DRAM
Yes
System OS RAM
System OS
OS Control
Reboot or power down system
System
Memory:
NVDIMM
M-N
Non-
Volatile
Up to 6
per
CPUs 1
and 2 (12
total in
system)
CPU<2:1>_
CH<3:0>_D
<2:0>
16GB per
NVDIMM-
N
Flash –
NVDIMM
No
Data integrity
When system
initiates a Save
(AC loss,
shutdown, etc.),
NVDIMM-N
controller will
transfer data from
DRAM to Flash
Neither system nor
OS can access the
flash, only a system
initiated Save will
trigger the NVDIMM-
N controller to
transfer data from
DRAM to flash
Using BIOS menu option, select
NVDIMM factory reset
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
Power off
iDRAC
DDR
Volatile
1
U_IDRAC_
MEM
256 MB
DRAM
No
iDRAC local
memory
iDRAC Firmware
No write protect
Power off
iDRAC
Volatile
1
U_IDRAC
64 kbyte +
registers
Cache +
registers
No
Processor cache
+ registers
iDRAC Firmware
No write protect
Power off
CPU
PIROM
Non-
Volatile
1 or 2
CPU1 /
CPU2
256 Bytes
EEPROM
No
Processor info +
scratchpad
SMBus interface
to iDRAC
128 bytes protected
by Intel/128 bytes
not protected
Cannot be cleared by the user