Cisco UCS C460 Manual de usuario descargar pdf (Pagina 17)

Cisco UCS C460 M2 High-Performance Rack-Mount Server

CONFIGURING the SERVER

■ Eight memory risers with at least two matched DIMM pairs per riser (16 DIMMs total) and up

to four matched DIMM pairs per riser (64 DIMMs total).

Caveats

■ Each CPU controls four DDR3 channels.

■ 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.

■ DIMMs are required to be populated in pairs. DIMMs for this server are available as two-DIMM

kits.

■ The DIMMs in any given pair must be identical.

■ Any DIMM installed in a memory riser corresponding to an empty CPU slot becomes

inaccessible.

■ For optimal performance, distribute DIMMs evenly across all installed CPUs and memory

buffers.

■ DIMMs within a channel are populated starting with the DIMMs farthest from the memory

buffer in a fill-farthest approach.

■ Matched pairs of risers on paired DDR3 channels must have identical DIMM configurations.

For more information about memory, see CPUs and DIMMs on page 46.

NOTE: There are three memory mirroring modes:

1 Intra-socket mirroring

2 Inter-socket cross-memory-controller mirroring

3 Inter-socket complete master-slave mirroring

Mirroring mode can be configured using the UCS Manager BIOS Policy RAS Memory

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Cisco UCS C460 Manual de usuario Pagina 17