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 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 36. Memory population rules
Processor Configuration Memory population Memory population information
Single processor Optimizer (Independent
channel) population order
1, 2, 4, 5 Odd amount of DIMMs per
processor allowed.
Mirror population order {1, 2, 3, 4, 5, 6} Mirroring is supported with 6
DIMMs per processor
Single rank sparing population
order
1, 2, 3, 4, 5, 6, 7, 8 Populate in this order, odd amount
per processor allowed. Requires
two ranks or more per channel.
Multi rank sparing population
order
1, 2, 3, 4, 5, 6, 7, 8 Populate in this order, odd amount
per processor allowed. Requires
three ranks or more per channel.
Fault resilient population order {1, 2, 3, 4, 5, 6} Supported with 6 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{4},
B{4}, A{5}, B{5}
Odd amount of DIMMs per
processor allowed.
Mirroring population order
A{1,2,3,4,5,6},
B{1,2,3,4,5,6}
Mirroring is supported with 6
DIMMs per processor.
Single rank sparing population
order
A{1}, B{1}, A{2}, B{2}, A{3},
B{3}…
Populate in this order, odd amount
per processor allowed. Requires
two ranks or more per channel.
Multi rank spare population
order
A{1}, B{1}, A{2}, B{2}, A{3},
B{3}…
Populate in this order, odd amount
per processor allowed. Requires
three ranks or more per channel.
Fault resilient population order
A{1,2,3,4,5,6},
B{1,2,3,4,5,6}
Supported with 6 DIMMs per
processor.
Removing a memory module
The procedure for removing a DIMM module and an NVDIMM-N module is identical.
Prerequisites
1. Follow the safety guidelines listed in Safety instructions.
2. Follow the procedure listed in Before working inside your system.
CAUTION:
To prevent data loss and potential damage to your system, ensure that your system, LEDs on
system, LEDs on NVDIMM-N and LEDs on NVDIMM-N battery are turned off before removing the NVDIMM-N
battery.
3. Remove the air shroud.
WARNING:
Allow the memory modules to cool after you power off the system. Handle the memory modules by
the card edges and avoid touching the components or metallic contacts on the memory module.
CAUTION: To ensure proper system cooling, memory module blanks must be installed in any memory socket that
is not occupied. Remove memory module blanks only if you intend to install memory modules in those sockets.
Installing and removing enclosure components 75