Dell PowerEdgeFC430 Owner's Manual

Contents

56 Installing and removing sled componentsThesystemsupportsFlexible MemoryConfiguration, enablingthesystemtobe configuredandruninanyvalidchipsetarchitecturalconfiguration. The following are the recommended guidelines for installing memory modules:• x4 and x8 DRAM based memory modules can be mixed. For more information, see the Mode-specific guidelines section.• Up to three dual- or single-rank RDIMMs can bepopulated per channel.• If memorymodules with different speeds areinstalled, they will operate at thespeedoftheslowestinstalledmemorymodule(s) orslower depending on system DIMM configuration.• Populate memory module sockets only if a processor is installed. For single-processor systems, sockets A1 to A4 are available. For dual-processor systems, sockets A1 to A4 and sockets B1 to B4 are available.• Populate all the sockets with white release tabs first, followed bytheblackreleasetabs, andthenthegreenreleasetabs.• When mixing memory modules with different capacities, populate the sockets with memory modules with highest capacity first. Forexample, if you want to mix 4 GB and 8 GB memory modules, populate 8 GB memory modules in the sockets with white release tabsand 4 GBmemorymodules in the sockets with black release tabs.• Inadual-processorconfiguration,thememoryconfigurationforeachprocessorshouldbeidentical.Forexample,ifyoupopulatesocketA1forprocessor1,thenpopulatesocketB1for processor 2,andsoon.• Memorymodules of different capacities can bemixed provided other memory population rules are followed (forexample, 4 GB and 8GB memory modules can be mixed).• The memory module for DIMM sockets A3, A4, B3, and B4 need to be inserted 180° reverse with regard to the DIMMs in the socketsA1, A2, B1, and B2.• Mixing of more than two memory module capacities inasystem isnot supported.• Populatefourmemorymodulesperprocessor(oneDIMMperchannel) atatimetomaximizeperformance.Table 24. Heat sink—processor configurationsWatts)Number of DIMMsRelated linksMode-specific guidelinesMode-specific guidelinesFour memory channels are allocated to each processor. The allowable configurations depend on the memory mode selected.Advanced Error Correction Code (lockstep)Advanced Error Correction Code (ECC) mode extends SDDC from x4 DRAM based DIMMs toboth x4 and x8 DRAMs. This protectsagainst single DRAM chip failures during normal operation.The installation guidelines for memory modules are as follows:• Memory modules must be identical in size, speed, and technology.• DIMMs installedin memorysockets with white release levers must be identical and the same rule applies for sockets with black releaselevers. This ensures that identical DIMMs areinstalledin matched pair —for example, A1 with A2, A3 with A4, A5 with A6, and so on.• DIMMsinstalledinmemorysockets with whitereleasetabsmust beidenticalandsimilarrule appliesforsockets with blackreleasetabs. This ensures that identical DIMMsareinstalledinmatched pairs- for example, A1 with A2, A3 with A4 andsoon.Processor configuration Processor type (in Heatsinkwidth Maximum systemcapacityReliability, Availability,and Serviceability (RAS)featuresDual processor Up to 120 W 61 mm 8 8140 W 96 mmSingle processor120 W 61 mm4444