Dell PowerEdge C4140 EMC Installation and Service Manual - Page 78

Removing a memory module, Optimizer Mode

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Table 34. Memory operating modes (continued) Memory Operating Mode Description NOTE: Memory configuration has to be of same size DIMM, speed, and rank. 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 35. Memory population rules Processor Configuration Dual processor (Start with processor1. processor1 and processor 2 population should match) Optimized (Independent channel) population order Mirroring population order Memory population Memory population information A{1}, B{1}, A{2}, B{2}, A{3}, B{3} • ... • Odd amount of DIMMs per processor allowed. 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 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 Multi rank spare population order Fault resilient 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. 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. A{1,2,3,4,5,6}, B{1,2,3,4,5,6} Supported with 6 DIMMs per processor. Removing a memory module Prerequisites WARNING: Allow the memory modules to cool after you power off the system. 1. Follow the safety guidelines listed in Safety instructions on page 57. 2. Follow the procedure listed in Before working inside your system on page 58. 3. Remove the air shroud. Steps 1. Locate the appropriate memory module socket. CAUTION: Handle each memory module only by the card edges, ensuring not to touch the middle of the memory module or metallic contacts. 2. Push the ejectors outward on both ends of the memory module socket to release the memory module from the socket. 3. Lift and remove the memory module from the system. 78 PowerEdge C4140 installing and removing system components

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Table 34. Memory operating modes (continued)
Memory Operating Mode
Description
NOTE:
Memory configuration has to be of same size
DIMM, speed, and rank.
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 35. Memory population rules
Processor
Configuration
Memory population
Memory population information
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}
…
•
Odd amount of DIMMs per
processor allowed.
•
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
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
Prerequisites
WARNING:
Allow the memory modules to cool after you power off the system.
1.
Follow the safety guidelines listed in
Safety instructions
on page 57.
2.
Follow the procedure listed in
Before working inside your system
on page 58.
3.
Remove the air shroud
.
Steps
1.
Locate the appropriate memory module socket.
CAUTION:
Handle each memory module only by the card edges, ensuring not to touch the middle of the memory
module or metallic contacts.
2.
Push the ejectors outward on both ends of the memory module socket to release the memory module from the socket.
3.
Lift and remove the memory module from the system.
78
PowerEdge C4140 installing and removing system components