Installing additional DIMMsThe following illustration shows how to install a dual inline memory module (DIMM)on a memory card.The following notes describe information that you must consider when installingDIMMs:v You can configure your server to use memory mirroring and memory scrubbing.For detailed information about configuring your server and using these features,see the User’s Guide on the IBM xSeries Documentation CD.v To use the hot-add and hot-swap memory features, you must reconfigure yourserver using the Configuration/Setup Utility program. See the User’s Guide onthe IBM xSeries Documentation CD for additional information.v There must be at least one memory card with one pair of DIMMs installed for theserver to operate.v When you install additional DIMMs on a memory card, be sure to install them inpairs. All the DIMM pairs on each memory card must be of the same size, andtype.v Install the DIMMs on each memory card in the order shown in the following table.You must install at least one pair of DIMMs on each memory card. See theUser’s Guide on the IBM xSeries Documentation CD for additional memoryconfiguration installation sequences.Table 2. Memory card installation sequenceMemory card order Memory card DIMM pairFirst 1 1 and 32 and 4Second 2 1 and 32 and 4Third 3 1 and 32 and 4Fourth 4 1 and 32 and 4Note: Add odd-numbered DIMMs to each available memory card first, then addthe even-numbered pairs.Chapter 2. Installing options 11
