v When you populate DIMMs in the MAX5, populate the larger capacity DIMMs
first; then the smaller capacity DIMMs. See Table 16 on page 122 for
non-mirroring mode DIMM population sequence and Table 17 on page 123 for
memory-mirroring mode DIMM population sequence.
v The MAX5 provides eight memory ports (memory channels) and each memory
port supports up to four DIMMs. Do not mix DIMMs with by x4 technology
(DIMMs with DRAMs that are organized with 4 data lanes) and x8 technology
(DIMMs with DRAMs that are organized with 8 data lanes) in the same memory
port. The following table shows the DIMM connectors on the eight memory
ports.
Table 14. DIMM connectors on each memory port
Memory ports DIMM connectors
1 1,2,7,and8
2 3,4,5,and6
3 9, 10, 15, and 16
4 11, 12, 13, and 14
5 17, 18, 23, and 24
6 19, 20, 21, and 22
7 25, 26, 31, and 32
8 27, 28, 29, and 30
Note: 2 GB, 4 GB, and 8 GB DIMMs are x4 technology DIMMs. 16 GB and 32 GB DIMMs
are x8 technology DIMMs.
v Do not mix DIMMs with 1 Gb (gigabit) DRAM technology, 2 Gb DRAM
technology, or other gigabit DRAM technologies in banks of eight DIMMs on
memory ports (memory channels) that are on the same memory controller. This
is not supported on the MAX5. The following table lists the DIMM connectors
for each bank of eight DIMMs that are on the memory ports within the same
memory controller.
Table 15. DIMM connectors on memory ports with the same memory controller
Bank of DIMMs DIMM connectors
1st bank of DIMMs 1, 2, 3, 4, 5, 6, 7, and 8
2nd bank of DIMMs 9, 10, 11, 12, 13, 14, 15, and 16
3rd bank of DIMMs 17, 18, 19, 20, 21, 22, 23, and 24
4th bank of DIMMs 25, 26, 27, 28, 29, 30, 31, and 32
v DIMMs must be installed in pairs for non-mirroring mode and in sets of four for
memory-mirroring mode.
v A minimum of two DIMMs must be installed in the MAX5 for each
microprocessor in the host server.
v The maximum operating speed of the MAX5 is determined by the slowest
DIMM installed in the MAX5.
v The MAX5 does not come with any DIMMs installed when you purchase it as a
option. When you install DIMMs, install them in the order shown in the
following tables to optimize system performance.
v The MAX5 supports non-mirroring mode and memory-mirroring mode through
the host server.
Chapter 2. Installing optional devices 121
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