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Best Practices

Maximising Capacity for Intel Xeon-based Servers

How you use memory – and which type you use – requires an understanding of how to balance low power, capacity and performance. In this document, one in a series of Kingston® Best Practice Guides for configuring memory, Kingston offers guidance on how to optimise capacity for servers using Intel Xeon processors.

Keep in Mind

  • Some applications, such as virtualisation, require the maximum memory capacity a platform can support.
  • Select the largest capacity memory modules a server can support. This avoids costly upgrades in the future should selected lower capacity modules prove insufficient.

 

Step 1

Know Your Processor’s Options for Module Types

  • Xeon 5600 processors support Single/Dual/Quad Rank DDR3 Registered DIMMs.
  • Xeon E5/E5 v2 processors support Single/Dual/Quad Rank DDR3 Registered DIMMs (RDIMMs), Load-Reduced DIMMs (LRDIMMs) and ECC Unbuffered DIMMs (ECC UDIMMs).
  • Xeon E5 v3 processors support Single/Dual Rank DDR4 Registered DIMMs (RDIMMs) and Load-Reduced DIMMs (LRDIMMs)
  • Maximum capacities available are:
    – 8GB ECC UDIMM
    – 16GB Dual Rank RDIMM
    – 16GB Quad Rank RDIMM
    – 32GB Quad Rank RDIMM
    – 32GB Quad Rank LRDIMM

Step 2

Maximise Memory Capacity

Check the memory support rules for the server platform that you are configuring. In general (based on Intel chipset/processor specifications), the maximum capacity memory rules are:

  • Xeon E7 processors:
    – Up to sixteen DDR3 RDIMMs per processor: A 4-way server reaches 2TB (64 x 32GB Quad Rank modules).
  • Xeon E7 v2 processors:
    – Up to 24 DDR3 RDIMMs per processor: A 4-way server reaches 6TB (96 x 64GB LRDIMMs)
  • Xeon 5600 processors:
    – Up to six Quad Rank DDR3 RDIMMs per processor: A 2-way server memory reaches 192GB (12 x 16GB Quad Rank modules) or 384GB (12 x 32GB Quad Rank modules).
    – Up to nine Dual Rank DDR3 RDIMMs per processor: A 2-way server memory reaches 288GB (18 x 16GB Dual Rank modules).
  • Xeon E5/E5 v2 4600 Series processors:
    – Up to eight Quad Rank DDR3 RDIMMs per processor: A 4-way server reaches 512GB (32 x 16GB Quad Rank modules) or 1TB (32 x 32GB Quad Rank modules).
    – Up to twelve Dual Rank DDR3 RDIMMs per processor: A 4-way server reaches 768GB (48 x 16GB Dual Rank modules).
  • Xeon E5/E5 v2 2600 Series processors:
    – Up to eight Quad Rank DDR3 RDIMMs per processor: A 2-way server memory reaches 256GB (16 x 16GB Quad Rank modules) or 512GB (16 x 32GB Quad Rank modules).
    – Up to 12 Dual Rank DDR3 RDIMMs per processor: A 2-way server memory reaches 384GB (24 x 16GB Dual Rank modules).
    – Up to 12 DDR3 LRDIMMs per processor: A 2-way server memory reaches 768GB (24 x 32GB LRDIMMs).
  • Xeon E5 v3 2600 series processors:
    – Up to 12 Single/Dual Rank DDR4 RDIMMs per processor: A 2-way server memory reaches 384GB (24 x 16GB Dual Rank modules).
    – Up to 12 Quad Rank DDR4 LRDIMMs per processor: A 2-way server memory reaches 768GB (24 x 32GB Quad Rank LRDIMMs).

Suggested Kingston Memory Modules

  • Xeon E7:
    – 8GB, 16GB Dual Rank 1333MHz/1066MHz (1.5V or 1.35V)
    – 8GB, 16GB, 32GB Quad Rank 1066MHz (1.5V or 1.35V)
  • Xeon E7 v2:
    – 8GB, 16GB Dual Rank 1333MHz/1066MHz (1.5V or 1.35V)
    – 8GB, 16GB, 32GB Quad Rank 1066MHz (1.5V or 1.35V) .
  • Xeon 5600:
    –16GB 1333MHz Dual Rank memory (1.5V or 1.35V) RDIMM
    –16GB, 32GB 1066MHz Quad Rank memory (1.5V or 1.35V) RDIMM
  • Xeon E5:
    –8GB 1600MHz ECC UDIMM
    –16GB Dual Rank 1600MHz (1.5V) or 1333MHz memory (1.5V or 1.35V) RDIMM
    –16GB, 32GB 1066MHz Quad Rank memory (1.5V or 1.35V) RDIMM
    – 32GB LRDIMM 1333MHz (1.5V or 1.35V)
    – The mixing of memory technology types within a system, or of different rank types within a bank, is not allowed. Mixing 1.5V and 1.35V within a system defaults the memory to 1.5V.
  • Xeon E5 v2:
    –16GB Dual Rank 1866MHz (1.5V) or 1600MHz (1.5V or 1.35V) RDIMM
    –16GB, 32GB Quad Rank 1333MHz/1066MHz (1.5V or 1.35V) RDIMM
    – 32GB 1866MHz (1.5V) LRDIMM
    – 32GB 1600MHz or 1333MHz (1.35V) LRDIMM
  • Xeon E5 v3:
    – 16GB Dual Rank DDR4-2133 (1.2V) RDIMM
    – 32GB Quad Rank DDR4-2133 (1.2V) LRDIMM

Kingston offers a full range of server memory modules and products to support configuration options that optimise performance, capacity or energy usage.

At a glance

This guide to maximising memory capacity is one in a series of “Kingston Memory Best Practices” for configuring memory. Other guides in the series provide the information and product considerations needed to minimising memory power usage and maximise performance. Kingston also offers an experienced pre-sales technical support staff to help you determine which configuration is ideal for your environment. Find the memory you need or contact a Kingston expert for help.