Memory Installation Rules - Fujitsu M10-4 Service Manual

memory information.
2.2.1

Memory installation rules

Install the memory in accordance with the following rules:
Mount memory in units of eight modules.
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Within a unit of eight modules, all the memory modules must be of the same
■
capacity and rank.
The mounted memory must correspond to each CPU. For memory for one CPU,
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use only R-DIMM (Registered DIMM: 8 GB/16 GB/32 GB) or only LR-DIMM (Load
Reduced DIMM: 64 GB).
First mount memory group A and then mount memory group B.
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To use the memory mirror function, mount eight DIMMs of the same capacity/
■
rank in each of memory group A and memory group B.
Figure 2-5
eight-module unit of mounted memory is indicated by letters a to f.
2-2 and
mounting locations may vary depending on the number of mounted CPU memory
units. Refer to this figure and table when you expand or reduce memory.
As for the mounting order of memory group B, give priority to using a uniform
memory type of either R-DIMM or LR-DIMM for one CPU over the memory
mounting patterns in
You can set memory for each CPU when configuring memory in the mirror
configuration. In such a case, mount all the memory in group A and group B for the
corresponding CPU.
eight modules on each of the right and left sides.
For example, in the memory on the right side of CMUL CPU#0 in
four-module set of MEM#00B, MEM#00A, MEM#01B, and MEM#01A mirrors the
four-module set of MEM#04B, MEM#04A, MEM#05B, and MEM#05A.
Fujitsu M10-4/Fujitsu M10-4S/SPARC M10-4/SPARC M10-4S Service Manual ･ November 2014
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shows the mounting locations of all the memory modules. Each
Table 2-3 list the supported memory installation configurations. The memory
Table 2-1,
Figure 2-5
Table 2-2, and Table 2-3.
shows a combination of mirrored memory in a unit of
Table 2-1, Table
Figure 2-5, the