Table 41. Memory population rulesProcessor Configuration Memory population Memory population informationSingle CPU Optimizer (Independent channel)population order1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 Populate in this order, odd amountallowed.Mirror population order {1, 2, 3, 4, 5, 6}, {7, 8, 9, 10, 11, 12} Mirroring is supported with 6 or 12DIMMs per CPU.Single rank spare population order 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 Populate in this order, odd amountallowed. Requires two ranks or moreper channel.Multi rank spare population order 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 Populate in this order, odd amountallowed. Requires three ranks or moreper channel.Fault resilient population order {1, 2, 3, 4, 5, 6}, {7, 8, 9, 10, 11, 12} Supported with 6 or 12 DIMMs perCPU.Dual CPU (Starting withCPU1, CPU1 and CPU2population shouldmatch)Optimized (Independent channel)population orderC1{1}, C2{1}, C1{2}, C2{2}, C1{3},C2{3}...Odd amount of DIMMs per CPUallowed.Mirroring population order C1{1, 2, 3, 4, 5, 6}, C2{1, 2, 3, 4, 5,6}, C1{7, 8, 9, 10, 11, 12}, C2{7, 8,9, 10, 11, 12}Mirroring is supported with 6 or 12DIMMs per CPU.Single rank sparing population order C1{1}, C2{1}, C1{2}, C2{2}, C1{3},C2{3}...Populate in this order, odd amount perCPU allowed. Requires two ranks ormore per channel.Multi rank spare population order C1{1}, C2{1}, C1{2}, C2{2}, C1{3},C2{3}, C1{4}, C2{4}, C1{5},C2{5}...Populate in this order, odd amount perCPU allowed. Requires three ranks ormore per channel.Fault resilient population order C1{1, 2, 3, 4, 5, 6}, C2{1, 2, 3, 4, 5,6}, C1{7, 8, 9, 10, 11, 12}, C2{7, 8,9, 10, 11, 12}Supported with 6 or 12 DIMMs perCPU.Removing a memory moduleThe procedure for removing a memory module and NVDIMM-N is identical.Prerequisites1 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, LEDson NVDIMM-N and LEDs on NVDIMM-N battery are turned off before removing the NVDIMM-N battery.3 If applicable, remove the air shroud.WARNING: Allow the memory modules to cool after you power off the system. Handle the memory modules by the card edgesand avoid touching the components or metallic contacts on the memory module.Steps1 Locate the appropriate memory module socket.CAUTION: Handle each memory module only by the card edges, ensuring not to touch the middle of the memorymodule 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.94 Dell EMC PowerEdge R740 Installation and Service ManualInstalling and removing system components
