Cisco UCS C460 M2 High-Performance Rack-Mount Server
CONFIGURING the SERVER
17
Caveats
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Each CPU controls four DDR3 channels.
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The minimum DIMM configuration is at least one matched DIMM pair installed in a memory
riser on either CPU1 or CPU2. All four CPUs can run from a single DIMM pair.
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DIMMs are required to be populated in pairs. DIMMs for this server are available as two-DIMM
kits.
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The DIMMs in any given pair must be identical.
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Any DIMM installed in a memory riser corresponding to an empty CPU slot becomes
inaccessible.
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For optimal performance, distribute DIMMs evenly across all installed CPUs and memory
buffers.
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DIMMs within a channel are populated starting with the DIMMs farthest from the memory
buffer in a fill-farthest approach.
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Matched pairs of risers on paired DDR3 channels must have identical DIMM configurations.
For more information about memory, see
CPUs and DIMMs on page 49
.
