Dell PowerEdge 6850 System Installation Manual

Also see for PowerEdge 6850: Information update System Board Replacement guide Information update Hardware installation guide User guide

Contents

Dell PowerEdge 6850 System Installation Manual Manual pdf 66 page image

Spare Bank SupportIf four identical single-rank memory modules are installed on a memory riser card, two of the four modules in the same rank can function as a spare bank if youselect the spare bank option using the System Setup program.Memory RAID SupportThe system supports memory Redundant Array of Independent DIMMs (RAID) if identical memory modules are installed in riser cards A, B, C, and D (all fourmemory riser cards are required for memory RAID support). Memory RAID must be enabled in the System Setup program.Memory Mirroring SupportThe system supports memory mirroring if identical memory modules are installed in riser card A and B or in riser card C and D (riser cards A and B are a mirrorpair and riser cards C and D are a mirror pair). Mirroring must be enabled in the System Setup program.Table 6-2 and Table 6-3 show examples of different memory configurations. Table 6-3 lists the various allowable combinations of single- and dual-rankedmemory modulesTable 6-2. Sample Memory Configurations per Memory Riser CardTable 6-3. Allowable Memory Module Configurations – Single-Ranked andDual-Ranked Memory ModulesNOTE: Spare bank is not support between memory riser cards.NOTE: Spare bank is not supported if memory RAID is enabled.NOTE: Spare bank is not supported if mirroring is enabled.Total Memory DIMM_1A DIMM_1B DIMM_2A DIMM_2B512 MB 256 MB 256 MB none none1 GB 256 MB 256 MB 256 MB 256 MB1 GB 512 MB 512 MB none none2 GB 512 MB 512 MB 512 MB 512 MB2 GB 1 GB 1 GB none none3 GB 1 GB 1 GB 512 MB 512 MB4 GB 1 GB 1 GB 1 GB 1 GB6 GB 2 GB 2 GB 1 GB 1 GB8 GB 2 GB 2 GB 2 GB 2 GBDIMM_1A DIMM_1B DIMM_2A DIMM_2BSingle rank Single rank none none