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Cisco UCS Cisco UCS C220 M3 High-Density Rack Server (Small Form Factor Disk Drive Model)
14
CONFIGURING the SERVER
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
Tab le 4.
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.
Table 4 Available DDR3 DIMMs
Product ID (PID) PID Description Voltage
Ranks/
DIMM
DIMM Options
UCS-ML-1X324RY-A 32GB DDR3-1600-MHz LR DIMM/PC3-12800/quad rank/x4/1.35v 1.35 V 4
UCS-MR-1X162RY-A 16GB DDR3-1600-MHz RDIMM/PC3-12800/dual rank/x4/1.35v 1.35 V 2
UCS-MR-1X162RX-A 16GB DDR3-1333-MHz RDIMM/PC3-10600/dual rank/x4/1.35v 1.35 V 2
UCS-MR-1X082RY-A 8GB DDR3-1600-MHz RDIMM/PC3-12800/dual rank/x4/1.35v 1.35 V 2
UCS-MR-1X082RX-A 8GB DDR3-1333-MHz RDIMM/PC3-10600/dual rank/x4/1.35v 1.35 V 2
UCS-MR-1X041RY-A 4GB DDR3-1600-MHz RDIMM/PC3-12800/single rank/x4/1.35v 1.35 V 1
UCS-MR-1X041RX-A 4GB DDR3-1333-MHz RDIMM/PC3-10600/single rank/x4/1.35v 1.35 V 1
Memory Mirroring Option
N01-MMIRROR Memory mirroring option