IBM Redbooks x3850 X5, Installation And User Manual

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Table 13. Memory-mirroring mode DIMM population sequence for the memory expansion
module (continued)
Sets of 4 DIMMs DIMM connector population sequence
Set 3 11, 14, 26, 31
Set 4 3, 6, 18, 23
Set 5 10, 15, 27, 30
Set 6 2, 7, 19, 22
Set 7 12, 13, 25, 32
Set 8 4, 5, 17, 24
Note: When you populate DIMMs in the memory expansion module,
populate the larger capacity DIMMs first, then the smaller capacity DIMMs.
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IBM System x3850 X5 and x3950 X5 Types 7145, 7146, 7143, and 7191: Installation and User's Guide