Skip to main content
Sign Out

Welcome to Dell

My Account
  • Place orders quickly and easily
  • View orders and track your shipping status
  • Enjoy members-only rewards and discounts
  • Create and access a list of your products
  • Manage your Dell EMC sites, products, and product-level contacts using Company Administration.
Sign In Create an Account Dell Financial Services Premier Sign In Partner Program Sign In
Contact Us

Your Dell.com Carts

Dell EMC PowerEdge R940xa Installation and Service Manual

PDF

NVDIMM-N memory module installation guidelines

The following are the recommended guidelines for installing NVDIMM-N memory modules:
  • Each system supports memory configurations with 1, 2, 4, 6, or 12 NVDIMM-Ns.
  • Supported configurations have dual processors and a minimum of 12x RDIMMs.
  • Maximum of 12 NVDIMM-Ns can be installed in a system.
  • NVDIMM-Ns or RDIMMs must not be mixed with LRDIMMs.
  • DDR4 NVDIMM-Ns must be populated only on the black release tabs on processor 1 and 2.
  • For systems with four processors, RDIMMs populated on processor 3 and 4 must be identical to the number of RDIMMs populated on processor 1 and 2.
  • All slots on configurations 3, 6, 9, and 12 can be used, but a maximum of 12 NVDIMM-Ns can be installed in a system.
NOTE NVDIMM-N memory slots are not hot-pluggable.

For more information about the supported NVDIMM-N configurations, see the NVDIMM-N User Guide at www.dell.com/poweredgemanuals.

Table 1. Supported NVDIMM-N for dual processor configurationsThis table lists the supported NVDIMM-N configurations for dual processor system.
Configuration Description Memory population rules
RDIMMs NVDIMM-N
Configuration 1 12x 16 GB RDIMMs, 1x NVDIMM-N

Processor1  {A1, 2, 3, 4, 5, 6}
Processor2  {B1, 2, 3, 4, 5, 6}

Processor1 {A7}

Configuration 2 12x 32 GB RDIMMs, 1x NVDIMM-N

Same for all 12x RDIMM configurations. See Configuration 1.

Processor1 {A7}

Configuration 3 23x 32 GB RDIMMs, 1x NVDIMM-N

Processor1 {A1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}  
Processor2 {B1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}  

Processor2 {B12}

Configuration 4 12x 16 GB RDIMMs, 2x NVDIMM-Ns

Same for all 12x RDIMM configurations. See Configuration 1.

Processor1 {A7}

Processor2 {B7}

Configuration 5 12x 32 GB RDIMMs, 2x NVDIMM-Ns

Same for all 12x RDIMM configurations.  See Configuration 1.

Processor1 {A7}

Processor2 {B7}

Configuration 6 22x 32 GB RDIMMs, 2x NVDIMM-Ns

Processor1 {A1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}
Processor2 {B1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}

Processor1 {A12}

Processor2 {B12}

Configuration 7 12x 16 GB RDIMMs, 4x NVDIMM-Ns

Same for all 12x RDIMM configurations. See Configuration 1.

Processor1 {A7, A8}

Processor2 {B7, B8}

Configuration 8 22x 32 GB RDIMMs, 4x NVDIMM-Ns

Same for all 12x RDIMM configurations. See Configuration 1.

Processor1 {A7, A8}

Processor2 {B7, B8}

Configuration 9 20x 32 GB RDIMMs, 4x NVDIMM-Ns

Processor1 {A1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
Processor2 {B1, 2, 3, 4, 5, 6, 7, 8, 9, 10}

Processor1 {A11, 12}

Processor2 {B11, 12}

Configuration 10 12x 16 GB RDIMMs, 6x NVDIMM-Ns

Same for all 12x RDIMM configurations. See Configuration 1.

Processor1 {A7, 8, 9}

Processor2 {B7, 8, 9}

Configuration 11 12x 32 GB RDIMMs, 6x NVDIMM-Ns

Same for all 12x RDIMM configurations. See Configuration 1.

Processor1 {A7, 8, 9}

Processor2 {B7, 8, 9}

Configuration 12 18x 32 GB RDIMMs, 6x NVDIMM-Ns

Processor1 {1, 2, 3, 4, 5, 6, 7, 8, 9}
Processor2 {1, 2, 3, 4, 5, 6, 7, 8, 9}

Processor1 {A10, 11, 12}

Processor2 {B10, 11, 12}

Configuration 13 12x 16 GB RDIMMs, 12x NVDIMM-Ns

Same for all 12x RDIMM configurations. See Configuration 1.

Processor1 {A7, 8, 9, 10, 11, 12}

Processor2 {B7, 8, 9, 10, 11, 12}

Configuration 14 12x 32 GB RDIMMs, 12x NVDIMM-Ns

Same for all 12x RDIMM configurations. See Configuration 1.

Processor1 {A7, 8, 9, 10, 11, 12}

Processor2 {B7, 8, 9, 10, 11, 12}

Table 2. Supported NVDIMM-N for quad processor configurationsThis table lists the supported NVDIMM-N configurations for quad processor system.
Configuration Description Memory population rules
RDIMMs NVDIMM-N
Configuration 1 24x 16 GB RDIMMs, 1x NVDIMM-N

Processor1 {A1, 2, 3, 4, 5, 6},
Processor2 {B1, 2, 3, 4, 5, 6},
Processor3 {C1, 2, 3, 4, 5, 6}
Processor4 {D1, 2, 3, 4, 5, 6}

Processor1 {A7}

Configuration 2 24x 32 GB RDIMMs, 1x NVDIMM-N

Same for all 24x RDIMM configurations. See Configuration 1.

Processor1 {A7}

Configuration 3 47x 32 GB RDIMMs, 1x NVDIMM-N

Processor1 {A1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12} ,
Processor2 {B1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11} ,
Processor3 {C1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}
Processor 4 {D1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}

Processor2 {B12}

Configuration 4 24x 16 GB RDIMMs, 2x NVDIMM-Ns

Processor1 {A1, 2, 3, 4, 5, 6},
Processor2 {B1, 2, 3, 4, 5, 6}
Processor3 {C1, 2, 3, 4, 5, 6}
Processor4 {D1, 2, 3, 4, 5, 6}

Processor1 {A7},
Processor2 {B7}
Configuration 5 24x 32 GB RDIMMs, 2x NVDIMM-Ns

Processor1 {A1, 2, 3, 4, 5, 6},
Processor2 {B1, 2, 3, 4, 5, 6},
Processor3 {C1, 2, 3, 4, 5, 6}
Processor4 {D1, 2, 3, 4, 5, 6}

Processor1 {A7},
Processor2 {B7}
Configuration 6 46x 32 GB RDIMMs, 2x NVDIMM-Ns

Processor1 {A1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11},
Processor2 {B1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11} ,
Processor3 {C1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}
Processor 4 {D1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}

Processor1 {A12},
Processor2 {B12}
Configuration 7 24x 16 GB RDIMMs, 4x NVDIMM-Ns

Processor1 {A1, 2, 3, 4, 5, 6},
Processor2 {B1, 2, 3, 4, 5, 6},
Processor3 {C1, 2, 3, 4, 5, 6}
Processor4 {D1, 2, 3, 4, 5, 6}

Processor1 {A7,8},
Processor2 {B7,8}
Configuration 8 24x 32 GB RDIMMs, 4x NVDIMMs

Processor1 {A1, 2, 3, 4, 5, 6},
Processor2 {B1, 2, 3, 4, 5, 6},
Processor3 {C1, 2, 3, 4, 5, 6}
Processor4 {D1, 2, 3, 4, 5, 6}

Processor1 {A7,8},
Processor2 {B7,8}
Configuration 9 44x 32 GB RDIMMs, 4x NVDIMM-Ns

Processor1 {A1, 2, 3, 4, 5, 6, 7, 8, 9, 10},
Processor2 {B1, 2, 3, 4, 5, 6, 7, 8, 9, 10},
Processor3 {C1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}
Processor4 {D1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}

Processor1 {A11, 12},
Processor2 {B11, 12}
Configuration 10 24x 16 GB RDIMMs, 6x NVDIMM-Ns

Processor1 {A1, 2, 3, 4, 5, 6},
Processor2 {B1, 2, 3, 4, 5, 6}
Processor3 {C1, 2, 3, 4, 5, 6}
Processor4 {D1, 2, 3, 4, 5, 6}

Processor1 {A7, 8, 9}
Processor2 {B7, 8, 9}
Configuration 11 24x 32 GB RDIMMs, 6x NVDIMM-Ns

Processor1 {A1, 2, 3, 4, 5, 6},
Processor2 {B1, 2, 3, 4, 5, 6},
Processor3 {C1, 2, 3, 4, 5, 6}
Processor4 {D1, 2, 3, 4, 5, 6}

Processor1 {A7, 8, 9}
Processor2 {B7, 8, 9}
Configuration 12 42x 32 GB RDIMMs, 6x NVDIMM-Ns

Processor1 {A1, 2, 3, 4, 5, 6, 7, 8, 9},
Processor2 {B1, 2, 3, 4, 5, 6, 7, 8, 9}
Processor3 {C1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}
Processor4 {D1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}

Processor1 {A10,11,12}
Processor2 {B10, 11, 12}
Configuration 13 24x 16 GB RDIMMs, 12x NVDIMM-Ns

Processor1 {A1, 2, 3, 4, 5, 6},
Processor2 {B1, 2, 3, 4, 5, 6},
Processor3 {C1, 2, 3, 4, 5, 6}
Processor4 {D1, 2, 3, 4, 5, 6}

Processor1 {A7, 8, 9, 10, 11, 12},
Processor2 {B7, 8, 9, 10, 11, 12}
Configuration 14 24x 32 GB RDIMMs, 12x NVDIMM-Ns

Processor1 {A1, 2, 3, 4, 5, 6},
Processor2 {B1, 2, 3, 4, 5, 6},
Processor3 {C1, 2, 3, 4, 5, 6}
Processor4 {D1, 2, 3, 4, 5, 6}

Processor1 {A7, 8, 9, 10, 11, 12},
Processor2 {B7, 8, 9, 10, 11, 12}
Configuration 15 36x 32 GB RDIMMs, 12x NVDIMM-Ns

Processor1 {A1, 2, 3, 4, 5, 6},
Processor2 {B1, 2, 3, 4, 5, 6},
Processor3 {C1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}
Processor 4 {D1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}

Processor1 {A7, 8, 9, 10, 11, 12},
Processor2 {B7, 8, 9, 10, 11, 12}

Rate this content

Accurate
Useful
Easy to understand
Was this article helpful?
0/3000 characters
  Please provide ratings (1-5 stars).
  Please provide ratings (1-5 stars).
  Please provide ratings (1-5 stars).
  Please select whether the article was helpful or not.
  Comments cannot contain these special characters: <>()\