Cisco UCS B22 M3 Blade Server
12
CONFIGURING the SERVER
Choose DIMMs and Memory Mirroring
Select the memory configuration and whether or not you want the memory mirroring option.
The supported memory DIMMs and the mirroring option are listed in
Table 4
.
The supported memory DIMMs in the UCS B22 M3 are listed in
Table 4
.
NOTE:
When memory mirroring is enabled, the memory subsystem simultaneously
writes identical data to two adjacent 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 Supported DDR3 DIMMs and Memory Mirroring Option
Product ID (PID)
PID Description
Voltage
Ranks
/DIMM
DIMM Options
UCS-ML-1X324RY-A
32GB DDR3-1600-MHz LRDIMM/PC3-12800/4R/x4/1.35v/35nm
1.35
4
UCS-MR-1X162RY-A
16GB DDR3-1600-MHz RDIMM/PC3-12800/2R/x4/1.35v/35nm
1.35/1.5 V 2
UCS-MR-1X082RY-A
8GB DDR3-1600-MHz RDIMM/PC3-12800/2R/x4/1.35v/35nm
1.35/1.5 V 2
UCS-MR-1X041RY-A
4GB DDR3-1600-MHz RDIMM/PC3-12800/1R/x4/1.35v/35nm
1.35/1.5 V 1
Memory Mirroring Option
N01-MMIRROR
Memory mirroring option
