Cisco UCS C240 M3 Manual page 13

Select 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 4 Available DDR3 DIMMs
Product ID (PID) PID Description
DIMM Options
UCS-MR-1X162RY-A 16GB DDR3-1600-MHz RDIMM/PC3-12800/2R/x4/1.35v
UCS-MR-1X162RX-A 16GB DDR3-1333-MHz RDIMM/PC3-10600/2R/x4/1.35v
UCS-MR-1X082RY-A 8GB DDR3-1600-MHz RDIMM/PC3-12800/2R/x4/1.35v
UCS-MR-1X082RX-A 8GB DDR3-1333-MHz RDIMM/PC3-10600/2R/x4/1.35v
UCS-MR-1X041RY-A 4GB DDR3-1600-MHz RDIMM/PC3-12800/single rank/x4/1.35v
UCS-MR-1X041RX-A 4GB DDR3-1333-MHz RDIMM/PC3-10600/single rank/x4/1.35v
Memory Mirroring Option
N01-MMIRROR Memory mirroring option
Approved Configurations
(1) 1-CPU configuration without memory mirroring:
Select from 1 to 12 DIMMs. Refer to
■
information.
(2) 1-CPU configuration with memory mirroring:
Cisco UCS C240 M3 High-Density Rack Server (Large Form Factor Hard Disk Drive Model)
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.
Memory Population Rules, page
CONFIGURING the SERVER
Table 4.
Voltage
1.35 V
1.35 V
1.35 V
1.35 V
1.35 V
1.35 V
47, for more detailed
Ranks/D
IMM
2
2
2
2
1
1
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