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14 SPARC Enterprise M4000/M5000 Servers Product Notes for XCP Version 1060 • November 2007
DIMM Replacement
The DIMMs are cold FRU replacement components. The entire server must be
powered off and the power cords disconnected to replace the DIMMs.
You can mount up to 4 memory boards on the SPARC Enterprise M4000 server and
up to 8 memory boards on the SPARC Enterprise M5000 server. The DIMMs on the
memory board are grouped into group A and group B.
Here are the DIMM mount conditions:
DIMM mounting rules:
■ Four(4) DIMMs per group can be mounted.
■ Capacity of the DIMMs in group A must be equal to or larger than the capacity of
the DIMMs in group B.
■ The capacity of the DIMMs in group B must be equal to or less than the capacity
of the DIMMs in group A. DIMMs in group B are optional.
■ For both groups, DIMMs must be of the same capacity and rank within a group.
DIMMs of different capacity cannot be mixed in a group.