NEC A1160 manual Dimm Capacity and Cell Memory, Rules for Memory Expansion

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Memory

Figure 2-5 DIMM Numbering

DIMM Capacity and Cell Memory

Table 2-1 lists the minimum and maximum memory in the cell if DIMMs of a specific capacity are used.

Table 2-1 DIMM Capacity and Cell Memory

DIMM Capacity	Minimum Memory in Cell	Maximum Memory in Cell
2 GB	4 GB	64 GB
4 GB	8 GB	128 GB

Check with your sales representative for the availability of specific DIMMs.

Rules for Memory Expansion

Note the following rules when expanding system memory:

yDIMMs must be installed in pairs. A pair consists of two identical fully buffered DIMMs of the same speed, capacity, and number of ranks.

yDIMMs must be loaded from the inside row of slots first before moving toward the outside row of slots. Do not leave an empty slot between two populated DIMM slots.

For the best performance, install two memory boards in a cell. Both memory boards should be populated with the same type of DIMMs and have the same memory capacity installed.

2-7

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Contents Technical Overview ƒ EXPRESS5800/A1160December Proprietary Notice and Liability DisclaimerContents Contents Figures Page Vii TablesPage Who Should Use This Guide Using This GuidePage Safety Notices Safety NoticesPage Safety Notices for Users Outside of the U.S.A. and Canada Page Scalable Symmetric Multiprocessing Servers Documentation UpdatesOperating Systems Operating SystemsWindows Operating Systems Virtual Machine Monitors Virtual Machine MonitorsLinux Operating Systems Page Express5800/A1160 Cell Cell ComponentProcessor Sockets ProcessorsProcessors Rules for Mixing Processors Supported ProcessorsMulticore Processors Extended Memory 64 Technology EM64TNode Controller Processor Voltage Regulator ModulesMemory MemoryMemory Boards Dimm Slot NumberingRules for Memory Expansion Dimm Capacity and Cell MemoryDimm Capacity and Cell Memory Subsystem Indicators on the Memory BoardDynamic Dimm Sparing Memory MirroringI/O Riser Board PCIe Card CarrierPCIe Card Carrier PortsPorts on Back of the Cell Inbuilt RAID ControllerPower PowerAC/DC Power Supplies Power ControlUninterruptible Power Supply UPS Partitions and PowerVolt Redundancy and AC Source Options CoolingCooling Peripherals PeripheralsExternal Peripherals Boot OptionsExpressscope Monitor System ClocksSystem Clocks Fault Messages on the Expressscope Monitor LCD Fault Messages on the Expressscope Monitor LCDDevice Names on the Expressscope Monitor LCD CRU Trusted Platform Module TPM Inbuilt VirtualizationInbuilt Virtualization For More InformationCell Interconnect and Multiple Cell Systems System ConfigurationSystem with Two Cells Cell Interconnect and Multiple Cell SystemsSystem Serial Number Cell IdentificationCell Identification Relation of Interconnect Port and Cable End to Cell IDCabinets CabinetsClustering PartitionsPartitions Redundant Configurations Redundant ConfigurationsReplaceable Components Clustering SoftwareExpress5800/A1160 Configuration Summary Express5800/A1160 Configuration SummaryMinimum and Maximum Configurations Page System Components Server ManagementNetwork Components Management Server Windows Domain ControllerClient Workstation Console Manager Client SoftwareIntelligent Platform Management Interface Management ArchitectureMain Components Management Board Management BoardFirmware Hub Service ProcessorRemote Console Interfaces Remote Console InterfacesTrusted Platform Module TPM PortsServer Management Software BiosEsmpro Manager and Agent Management Software ComponentsManagement Software Components Remote Monitoring Accessing Remote MonitoringComponents on the Front of a Cell Cell ComponentsLCD Components on the Rear of a CellComponents on the Rear of a Cell AC power cord