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Chapter 2 Preparations
DIMM installation order
This server's memory subsystem is divided into channels. Each processor supports 6 channels and each channel
supports 2 DIMM slots.
Please see the following chart for the location of the slot number.
The order of installation may be different on x1CPU (PROC1) configuration and x2 CPU (PROC1, PROC2)
configuration.
When only CPU1 is mounted
DIMM slot number
1 DIMM
2 DIMM
3 DIMM
4 DIMM
5 DIMM
6 DIMM
7 DIMM
8 DIMM
9 DIMM
10 DIMM
11 DIMM
12 DIMM
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Note
See Memory RAS features supported by additional memory board in 1.11.3
Memory RAS Feature before using memory RAS feature.
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10 7
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11
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10 7
Important
If the number of DIMMs mounted is 5, 7, 9, 10, or 11, Information Message 510 is
displayed in the "Unbalanced, not recommended" state during POST. This does not
require any action.
510 - The installed number of DIMMs on one or more processors results in an
unbalanced memory configuration across memory controllers. This may result in
non-optimal memory
Express5800/R120h-2M (3rd-Gen) User's Guide
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1. Installing Internal Optional Devices
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