channel 2: slots B3, B7, and B11

channel 3: slots B4, B8, and B12

Mode-Specific Guidelines

Four memory channels are allocated to each processor. The allowable configurations depend on the memory mode selected.

NOTE: x4 and x8 DRAM based DIMMs can be mixed providing support for RAS features. However, all guidelines for specific RAS features must be followed. x4 DRAM based DIMMs retain Single Device Data Correction (SDDC) in memory optimized (independent channel) mode. x8 DRAM based DIMMs require Advanced ECC mode to gain SDDC.

The following sections provide additional slot population guidelines for each mode.

Memory Optimized (Independent Channel) Mode

This mode supports SDDC only for memory modules that use x4 device width and does not impose any specific slot population requirements.

Memory Configuration

The following table shows the memory configuration for a two processor configuration.

NOTE: 2R in the following table indicates dual ranked DIMMs.

Table 1. Memory Configuration

Configuratio

System

DIMM Size

Number of

DIMM Rank,

DIMM Slot Population

n

Capacity (in

(in GB)

DIMMs

Organization, and

 

 

GB)

 

 

Frequency

 

 

 

 

 

 

 

Standard

64

4

16

2R, x8, 1600 MT/s,

A1, A2, A3, A4, A5, A6, A7, A8

 

 

 

 

 

B1, B2, B3, B4, B5, B6, B7, B8

 

 

8

8

 

A1, A2, A3, A4

 

 

 

 

 

B1, B2, B3, B4

 

 

16

4

 

A1, A2

 

 

 

 

 

B1, B2

High

128

16

8

2R, x8, 1600 MT/s,

A1, A2, A3, A4

capacity

 

 

 

 

B1, B2, B3, B4

Removing Memory Modules

WARNING: The memory modules are hot to the touch for some time after the system has been powered down. Allow time for the memory modules to cool before handling them. Handle the memory modules by the card edges and avoid touching the components or gold contacts on the memory module.

CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.

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Dell DL4000 Mode-Specific Guidelines, Memory Configuration, Removing Memory Modules, Number Dimm Rank Dimm Slot Population

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