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Dual processor configuration
Processor 1 P1DIMM slots
Channel 1
Configuration
1B
1A
A
X
B
X
C
X
D
X
E
X
X
F
X
X
G
X
X
Notes: 1. Place DIMMs in "X" location.
2. DIMM population must correspond to the above tables.
3. DIMM modules support 1 GB, 2 GB, 4 GB and 8 GB DIMMS.
4. The size of each DIMM must be the same across the configuration.
5. Do not mix UDIMMs with RDIMMs.
Mirroring mode
For mirroring mode, the memory contains a primary image and a copy of the primary image.
•
Therefore, the effective size of memory is reduced by at least one-half.
Channels 3 has no function and cannot be populated in this mode.
•
Follow the population rules described in independent mode.
•
DIMM modules installed in channels 1 and 2 must be identical — 1A and 2A should be the same
•
type, size and manufacturer. 1B and 2B memory should be the same type, size and manufacturer.
However, it is not necessary for slot A to have the same memory module as slot B within a
channel.
The same rule applies to processor 2.
•
Memory population for mirroring mode
Single processor configuration
Single processor
Processor 1 P1DIMM slots
Channel 1
Configuration
1B
1A
A
X
B
X
X
Dual processor configuration
Processor 1 P1DIMM slots
Channel 1
Configuration
1B
1A
A
X
B
X
C
X
X
D
X
X
Notes: 1. Place DIMMs in "X" location.
2. DIMM population must correspond to the above tables.
3. DIMM modules support 1 GB, 2 GB, 4 GB and 8 GB DIMMS.
4. The size of each DIMM must be the same across the configuration.
5. Do not mix UDIMMs with RDIMMs.
52
Dual processors
Channel 2
Channel 3
Channel 1
2B
2A
3B
3A
1B
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Channel 2
Channel 3
2B
2A
3B
3A
X
NA
NA
X
X
NA
NA
Dual processors
Channel 2
Channel 3
Channel 1
2B
2A
3B
3A
1B
X
NA
NA
X
NA
NA
X
X
NA
NA
X
X
NA
NA
X
Processor 2 P2DIMM slots
Channel 2
Channel 3
1A
2B
2A
3B
3A
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Processor 2 P2DIMM slots
Channel 2
Channel 3
1A
2B
2A
3B
3A
NA
NA
X
X
NA
NA
X
X
NA
NA
X
X
X
NA
NA
Chapter 7
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