Cisco Systems UCS C220 M3, A03D1TBSATA manual Select DIMMs and Memory Mirroring, Dimm Options

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.

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

14 Cisco UCS Cisco UCS C220 M3 High-Density Rack Server (Small Form Factor Disk Drive Model)