Owners Manual

Optimizer Mode
This mode supports Single Device Data Correction (SDDC) only for memory modules that use x4 device width. It does not impose any
specic 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.
• Quad processor: Populate the slots in round robin sequence starting with processor 1.
NOTE: Processor 1, processor 2, processor 3, and processor 4 population should match.
Table 40. Memory population rules
Processor Conguration Memory population Memory population information
Single processor Optimizer (Independent
channel) population order
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
12
• DIMMs must be populated in the order
specied.
• Odd number of DIMM population is allowed
NOTE: Odd number of DIMMs will
result in unbalanced memory
congurations, 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, A10,
A11
Mirror population order {1, 2, 3, 4, 5, 6} {7, 8, 9, 10,
11, 12}
Mirroring is supported with 6 or 12 DIMMs per
processor.
Single rank sparing
population order
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
12
• DIMMs must be populated in the order
specied.
• Requires two ranks or more per channel.
Multi rank sparing
population order
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
12
• DIMMs must be populated in the order
specied.
• Requires three ranks or more per channel.
Fault resilient population
order
{1, 2, 3, 4, 5, 6} {7, 8, 9, 10,
11, 12}
Supported with 6 or 12 DIMMs per processor.
Dual processor (Start
with processor1.
processor1 and
processor 2 population
should match)
Optimized (Independent
channel) population order
A{1}, B{1},
A{2}, B{2},
A{3}, B{3},
A{4}, B{4},
A{5}, B{5},
A{6}, B{6}
Odd number of DIMM population per processor is
allowed.
NOTE: Odd number of DIMMs will result in
unbalanced memory congurations, which
in turn will result in performance loss. It is
recommended to populate all memory
channels identically with identical DIMMs
for best performance.
82 Installing and removing system components