Dell EMC PowerEdge R740xd2 - Page 100

NOTE: Processor 1 and processor 2 population should match.
Table 10. 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
• Populate in this order, odd amount
allowed.
• 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, 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
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 8 and 14 DIMM
installations of dual processor.
– For 8 DIMMs: A1, A2, A4, A5,
B1, B2, B4, B5
100 Installing and removing system components