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User Guide
185
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Memory Mirroring
The memory mirroring feature writes the same data into two groups of DIMMs
corresponding with each other between memory branches (mirror set) to provide data
redundancy.
Figure 123: Memory Mirroring
A: Motherboard
B: Memory Controller
C: Branch #0
D: Branch #1
E: Mirroring Pairs
Note: The operating system only recognizes half of the total
physical capacity.
The memory mirroring feature can be used under the following conditions:
■
Install memory modules on four memory sockets configuring a mirror set.
■
All the installed memory modules should have the same capacity.
■
Run SETUP, change the parameters appropriately in the [Mirror] menu selected as
shown below, save the settings and exit from SETUP.
[Advanced], [Memory Configuration], [Memory RAS Feature], [Mirror]
■
Install memory modules in the following order:
Groups 1 and 2, Groups 3 and 4, Groups 5 and 6
The following mirroring cannot be configured:
■
Memory mirroring between different mirror sets.
Group#1 Group#2
A
B
C
D
E
E
E
#1 #2
#3 #4
#5 #6
#1 #2
Data 1
Data 2
Data 3
Data 4
Data 1
Data 3
Data 4
Data 2