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DIMM 1
DIMM 2
DIMM 3
DIMM 4
DIMM 5
DIMM 6
DIMM 7
DIMM 8
v In a low-cost and low-power DIMM installation, install the DIMMs on each
memory card in the order shown in the following tables. The goal in a low-cost
and low-power configuration is to completely fill each memory card before you
install the next memory card.
Table 6. Low-cost and low-power DIMM installation sequence
DIMM pair
installation order
Memory-card
connector number
DIMM-connector
numbers
Installed
microprocessors
First 1 1 and 8 1 and 4
Second 7 1 and 8
Third 1 3 and 6
Fourth 7 3 and 6
Fifth 1 2 and 7
Sixth 7 2 and 7
Seventh 1 4 and 5
Eighth 7 4 and 5
If you plan to install additional memory cards in the low-cost and low-power
installation sequence, follow the DIMM installation sequence in Table 6 for each
memory card. Install the memory cards in the installation sequence shown in
Table 7.
Table 7. Low-cost and low-power memory-card installation sequence
Memory card pairs
Memory-card connector
number Installed microprocessors
First 1 and 7 1 and 4
Second 2 and 8
Third 3 and 5 2 and 3
Fourth 4 and 6
In a high-performance DIMM installation, 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.
66 IBM System x3850 X5 and x3950 X5 Types 7145, 7146, 7143, and 7191: Installation and User's Guide