General Memory Module Installation Guidelines - Dell POWEREDGE EMU01 Hardware Owner's Manual

Your system hardware supports Non-Uniform Memory Architecture (NUMA). Each processor has its own
memory controller and local memory for reduced access times, but it can also access memory from
another processor. This architecture improves system performance if an operating system is installed that
supports this feature.
NOTICE:
To enable NUMA, run the System Setup program and disable the Node Interleaving option. See "Using
the System Setup Program" on page 31.

General Memory Module Installation Guidelines

To ensure optimal performance of your system, observe the following guidelines when configuring your
system memory.
• Memory modules must be installed in pairs, beginning with DIMM1 and DIMM2 (processor 1)
DIMM5 and DIMM6 (processor 2), DIMM9 and DIMM10 (processor 3), and DIMM13 and DIMM14
(processor 4).
• The memory modules must be identical in speed and technology. The DIMMs in each pair must be
the same size.
Memory can either be installed in a two-processor configuration (Table 3-2) or a four-processor
configuration (Table 3-3).
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Installing System Components