IBM 72332MU Installation Guide - Page 30

and guiding you to the defective DIMM. When this occurs, first identify the, defective DIMM; then

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Table 4. Memory-card installation sequence for memory-mirroring configuration DIMM pair installation order Memory card Connector numbers First 1 1 and 5 2 1 and 5 Second 3 1 and 5 4 1 and 5 Third 1 2 and 6 2 2 and 6 Fourth 3 2 and 6 4 2 and 6 Fifth 1 3 and 7 2 3 and 7 Sixth 3 3 and 7 4 3 and 7 Seventh 1 4 and 8 2 4 and 8 Eighth 3 4 and 8 4 4 and 8 v If memory mirroring is enabled, you can hot-replace one memory card at a time on each memory power bus. If a problem with a DIMM is detected, light path diagnostics will light the system-error LED on the front of the server, indicating that there is a problem and guiding you to the defective DIMM. When this occurs, first identify the defective DIMM; then, remove and replace the DIMM. The following illustration shows the LEDs that are visible from the top of the memory card. 18 IBM System x3850 M2 and System x3950 M2 Types 7141 and 7233: Installation Guide

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Table 4. Memory-card installation sequence for memory-mirroring configuration
DIMM pair installation
order
Memory card
Connector numbers
First
1
1 and 5
2
1 and 5
Second
3
1 and 5
4
1 and 5
Third
1
2 and 6
2
2 and 6
Fourth
3
2 and 6
4
2 and 6
Fifth
1
3 and 7
2
3 and 7
Sixth
3
3 and 7
4
3 and 7
Seventh
1
4 and 8
2
4 and 8
Eighth
3
4 and 8
4
4 and 8
v
If memory mirroring is enabled, you can hot-replace one memory card at a time
on each memory power bus.
If a problem with a DIMM is detected, light path diagnostics will light the
system-error LED on the front of the server, indicating that there is a problem
and guiding you to the defective DIMM. When this occurs, first identify the
defective DIMM; then, remove and replace the DIMM.
The following illustration shows the LEDs that are visible from the top of the
memory card.
18
IBM System x3850 M2 and System x3950 M2 Types 7141 and 7233: Installation Guide