Cisco UCS C460 Manual de usuario descargar pdf (Pagina 15)

Cisco UCS C460 M2 High-Performance Rack-Mount Server

CONFIGURING the SERVER

Choose Memory Riser Boards

You may choose four memory riser boards for a two-CPU system or eight memory riser boards for

a four-CPU system.

Approved Configurations

(1) Two-CPU System

■ Choose four memory riser boards from Table 4.

(1) Four-CPU System

■ Choose eight memory riser boards from Table 4.

Caveats

■ You should order enough risers with enough sockets to accommodate your maximum

forseeable memory needs.

Choose DIMMs and Memory Mirroring

Select the memory configuration and whether or not you want the memory mirroring option.

The available memory DIMMs and mirroring option are listed in

Table 5.

Table 4 Available Memory Riser Boards

Product ID (PID) PID Description Max DIMMs per Riser

Riser Board Options

UCSC-MRB-002-C460 Memory riser board for C460 m2 server only 8

NOTE: When memory mirroring is enabled, the memory subsystem simultaneously

writes identical data to two channels. If a memory read from one of the channels

returns incorrect data due to an uncorrectable memory error, the system

automatically retrieves the data from the other channel. A transient or soft error in

one channel does not affect the mirrored data, and operation continues unless there

is a simultaneous error in exactly the same location on a DIMM and its mirrored

DIMM. Memory mirroring reduces the amount of memory available to the operating

system by 50% because only one of the two populated channels provides data.

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Cisco UCS C460 Manual de usuario Pagina 15