Mirroring Mode - Acer AR180 F1 Series User Manual

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Mirroring mode

• In mirroring mode, the memory contains a primary image and a
copy of the primary image. Therefore, the effective size of
memory is redcued by at least one-half.
• Channel 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 lockstep mode
Single processor configuration
Configuration
A
B
Dual processor configuration
Channel 1
Configuration 1B
A
B
C X
D 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.
Single processor
Processor 1 P1DIMM slots
Channel 1 Channel 2
1B 1A 2B
X
X X X
Dual processors
Processor 1 P1DIMM slots
Channel 2 Channel 3
1A 2B 2A 3B
X X NA
X X NA
X X X NA
X X X NA
Channel 3
2A 3B 3A
X NA NA
X NA NA
Processor 2 P2DIMM slots
Channel 1 Channel 2
3A 1B 1A 2B
NA
NA X
NA X
NA X X X
Channel 3
2A 3B 3A
NA NA
X NA NA
X NA NA
X NA NA