SYSTEM CONFIGURATION GUIDE
–
NEC Express5800/R120h-2E
NEC Corporation
Revision 6.0
– January 2019
10
3 Memory
Available slots: 8 per processor
Category
Product Name / Description
Part Number
Registered DIMM
(RDIMM)
8GB DDR4-2666 REG Memory Kit (1x8GB/SR)
1 x 8GB Registered ECC DIMM, DDR4-2666(PC4-2666), Single Rank
N8102-708
16GB DDR4-2666 REG Memory Kit (1x16GB/SR)
1 x 16GB Registered ECC DIMM, DDR4-2666(PC4-2666), Single Rank
N8102-709
16GB DDR4-2666 REG Memory Kit (1x16GB/DR)
1 x 16GB Registered ECC DIMM, DDR4-2666(PC4-2666), Dual Rank
N8102-710
32GB DDR4-2666 REG Memory Kit (1x32GB/DR)
1 x 32GB Registered ECC DIMM, DDR4-2666(PC4-2666), Dual Rank
N8102-711
Load Reduced DIMM
(LRDIMM)
64GB DDR4-2666 LR Memory Kit (1x64GB/QR)
1 x 64GB Load Reduced ECC DIMM, DDR4-2666(PC4-2666), Quad Rank
N8102-712
NOTE:
Minimum one memory kit per processor must be installed.
It is recommended to install memory kits in multiples of 6 identical DIMMs for 6-channel symmetric memory configurations to
increase memory transfer speed.
Mix configurations of RDIMM and LRDIMM are not supported.
See page for additional memory configuration information.
Memory Configuration Feature Comparison
See the table below for feature comparisons of memory configurations supported.
Independent Channel
Memory Sparing
Memory Mirroring
Performance
Best
Better
Good
Data Protection
No
Multiple single bit error
protection
Multiple single bit and multi bit
error protection
Redundancy
No
Partly
Fully
Data Correction
ECC, x4 SDDC
ECC, x4 SDDC
ECC, x4 SDDC
Available Memory
Full physical memory
Two ranks of memory per
channel : Half physical
memory
Four ranks of memory per
channel : 3/4 physical memory
Eight ranks of memory per
channel : 7/8 physical memory
Half physical memory
Available Memory
Channels
6
6
6
Notes
-
All DIMMs in the system must
be identical.
Six DIMMs per processor are
supported, one DIMM is
populated per channel
All DIMMs in the system must
be identical.
Two or four DIMMs per
processor are supported,
It is necessary to re-populate
DIMMs after shipment,
please contact your sales
representative for Memory
Mirroring.
Single Rank Memory (N8102-708/-709) does not support Memory Mirroring Mode Configuration Service.
Refer to ”Memory RAS Settings”
Maximum Memory Speed
See the table below for the actual maximum memory transfer speed. DDR4 memory speed depends on CPU series.
Processor Type
DIMM Speed
Xeon ® Gold 6100 Series
Xeon ® Gold 5122 Processor
2666 MHz
Xeon ® Gold 5100 Series (Except Xeon ® Gold 5122 Processor)
Xeon ® Silver 4100 Series
2400 MHz
Xeon ® Bronze 3100 Series
2133 MHz
