9-30 Upgrading Your Server
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.
Mother board
Memory controller
Branch #0
Branch #1
Group #1
Group #2
Data1
Data1
Pair of
mirroring
Group #1
Group #2
Data2
Data2
Data3
Data4
Data3
Data4
Pair of
mirroring
Group #3
Group #4
Pair of
mirroring
Group #5
Group #6
NOTE:
The operating system only recognizes a half of the total
physical capacity.
The memory mirroring feature can be used under the following conditions:
Install memory devices on four memory sockets configuring a mirror set.
All the installed memory devices should have the same capacity.
Run SETUP (see Chapter 4), change 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 devices 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
Memory mirroring within a specific memory branch
Summary of Contents for Express5800/120Ri-2
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Page 19: ...Notes on Using Your Server 1 3 Internal View ...
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