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CONFIGURATION GUIDE – NEC Express5800/R120d-1E

NEC Corporation Revision 4.0 – December 21, 2012 15

3 Memory

3.1 Memory Configuration

Refer to the section in accordance with your memory configuration:

 Independent Channel Configuration: Refer to 3.1.1

 Memory Sparing Configuration: Refer to 3.1.2

 Memory Mirroring / Memory Lockstep Configuration: Refer to 3.1.3

Memory Configuration Feature Comparison

See the table below for feature comparisons of memory configurations supported.

Independent

Channel

Memory

Sparing

Memory

Lockstep

Memory

Mirroring

Performance

Best

Better

Good

Data Protection

Multiple single bit

error protection

Multiple single bit

and multi bit error

protection

Redundancy

Partly

Fully

Data Correction

ECC, x4 SDDC

ECC, x8 SDDC

ECC, x4 SDDC

Available Memory

Full physical

memory

2/3 physical memory

Full physical

memory

Half physical

memory

Available Memory

Channels

Notes

All DIMMs in the

system must be

identical.

Paired DIMMs must

be identical.

Paired DIMMs must

be identical.

 N8102-455F 4GB DDR3-1333 UNB Memory Kit and N8102-488F 2GB DDR3-1600 REG Memory Kit

do not support x4 SDDC.

3.1.1 Independent Channel Configuration

Available slots: 6 per processor

Category

Product Name / Description

Part Number

Unbuffered DIMM

(UDIMM)

4GB DDR3-1333 UNB Memory Kit

1x 4GB Unbuffered ECC DIMM, DDR3L-1333(PC3L-10600)

NOTE: The x4 SDDC is not supported.

N8102-455F

Registered DIMM

(RDIMM)

2GB DDR3-1600 REG Memory Kit

1x 2GB Registered ECC DIMM, DDR3L-1600(PC3L-12800)

NOTE: The x4 SDDC is not supported.

N8102-488F

4GB DDR3-1600 REG Memory Kit

1x 4GB Registered ECC DIMM, DDR3L-1600(PC3L-12800)

N8102-489F

8GB DDR3-1600 REG Memory Kit

1x 8GB Registered ECC DIMM, DDR3L-1600(PC3L-12800)

N8102-490F

16GB DDR3-1600 REG Memory Kit

1x 16GB Registered ECC DIMM, DDR3L-1600(PC3L-12800)

N8102-491F

32GB DDR3-1066 REG Memory Kit

1x 32GB Registered ECC DIMM, DDR3L-1066(PC3L-8500)

N8102-492F

NOTE:

 Minimum one memory kit per processor must be installed.

 It is recommended to install three identical memory kits for triple-channel symmetric memory

configurations to increase memory transfer speed.

 Mix configurations of UDIMM/RDIMM are not supported.

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