IBM X3950 X5 Problem Determination And Service Manual page 149

Table 19. High-performance memory-card installation sequence (continued)
DIMM pair installation
order
Fifteenth
Sixteenth
Seventeenth
Eighteenth
Nineteenth
Twentieth
Twenty-first
Twenty-second
Twenty-third
Twenty-fourth
Twenty-fifth
Twenty-sixth
Twenty-seventh
Twenty-eighth
Twenty-ninth
Thirtieth
Thirty-first
Thirty-second
To enable memory mirroring, you must install DIMMs in sets of four, one pair in
each memory card. All DIMMs in each set must be the same size and type.
Memory cards 1 and 2 mirror each other, cards 3 and 4 mirror each other,
memory cards 5 and 6 mirror each other, and cards 7 and 8 mirror each other.
Install DIMMs in the sequence shown in the following table.
Table 20. Memory-card installation sequence for memory-mirroring configuration
DIMM quad installation
order
First
Second
Third
Fourth
Fifth
Sixth
Seventh
Memory-card connector
number
4
6
1
7
3
5
2
8
4
6
1
7
3
5
2
8
4
6
Memory-card connector
number
1
2
7
8
3
4
5
6
1
2
7
8
3
4
Chapter 5. Removing and replacing components
DIMM connector numbers
3 and 6
3 and 6
2 and 7
2 and 7
2 and 7
2 and 7
2 and 7
2 and 7
2 and 7
2 and 7
4 and 5
4 and 5
4 and 5
4 and 5
4 and 5
4 and 5
4 and 5
4 and 5
DIMM connector numbers
1 and 8
1 and 8
1 and 8
1 and 8
1 and 8
1 and 8
1 and 8
1 and 8
3 and 6
3 and 6
3 and 6
3 and 6
3 and 6
3 and 6
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