Optimizer Mode
This mode supports Single Device Data Correction (SDDC) only for memory modules that use x4 device width. It does not
impose any specific slot population requirements.
●
Dual processor: Populate the slots in round robin sequence starting with processor 1.
NOTE:
Processor 1 and processor 2 population should match.
Table 21. Memory population rules
Processor
Configuration
Memory population
Memory population information
Single processor
Optimizer (Independent
channel) population order
1, 2, 3, 4, 5, 6, 7, 8, 9, 10
●
Populate in this order, odd
amount allowed.
●
Odd number of DIMM
population is allowed.
NOTE:
Odd number of
DIMMs will result in
unbalanced memory
configurations, which in
turn will result in
performance loss. It is
recommended to populate
all memory channels
identically with identical
DIMMs for best
performance.
●
Optimizer population order is
not traditional for 4 and 8
DIMM installations of single
processor.
○
For 4 DIMMs: A1, A2, A4, A5
○
For 8 DIMMs: A1, A2, A4,
A5, A7, A8, A9, A10
Mirror population order
{1, 2, 3, 4, 5, 6}
Mirroring is supported with 6
DIMM slots per processor.
Single rank sparing population
order
1, 2, 3, 4, 5, 6, 7, 8, 9, 10
Populate in this order, odd amount
allowed. Requires two ranks or
more per channel.
Multi rank sparing population
order
1, 2, 3, 4, 5, 6, 7, 8, 9, 10
Populate in this order, odd amount
allowed. Requires three ranks or
more per channel.
Dual processor
(Populate round robin
starting with
processor1)
Optimized (Independent
channel) population order
A{1}, B{1}, A{2}, B{2}, A{3},
B{3}...
●
Odd amount of DIMM slots per
processor allowed.
●
Odd number of DIMM
population is allowed.
NOTE:
Odd number of
DIMMs will result in
unbalanced memory
configurations, which in
turn will result in
performance loss. It is
recommended to populate
all memory channels
identically with identical
DIMMs for best
performance.
50
Installing and removing system components
