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