iSeries Model 570 147Draft Document for Review October 18, 2004 5486m570.fm #3046 - 2 GB Main Storage DIMM (DDR - 256 Mb technology, stacked, CCIN3046) four are required * #4452 - 2 GB DDR Main Storage (DDR1 CCIN 309D)Ships four 512 MB DIMMs for a total of 2 GB #4454 - 8 GB DDR Main Storage (DDR1 CCIN 30AA)Ships four 2 GB DIMMs for a total of 8 GB #4490 - 4 GB DDR Main Storage (DDR1 CCIN 309E)Ships four 1 GB DIMMs for a total of 4 GB #4491 - 16 GB DDR Main Storage (DDR1 CCIN 30B3)Ships four 4 GB DIMMs for a total of 16 GB #4492 - 32 GB DDR Main Storage (DDR1 CCIN 30F7)Ships four 8 GB DIMMs for a total of 32GBOnly supported on #8971 Processor (CCIN 26F2)The Model 570 offers pluggable DIMMs for memory. Each 0/2-way processorcard contains eight slots for up to eight pluggable DIMMs. The minimum memoryfor a 9406 Model 570 is 2 GB. The maximum memory capacity depends on thenumber of processors ordered for the system and on the type of memory andfunctionality required.The main storage cards are installed according to the following rules. There areno restrictions for mixing and matching DIMMs other than: Memory DIMMs must be installed in quads. Quads must all be the same DIMM.DIMMs are plugged, by quad, in either of the following sequences: J0A, J0C, J1A, J1C J0B, J0D, J1B, J1DMemory Spreading and BalancingPerformance measurements have determined that optimal performance requiresboth spreading of memory across processors and balancing memory acrossprocessors. The following rules should be followed for Model 570 memory.Note: We recommend that you perform memory balancing. You must ordersufficient memory to balance memory across processors.
