Servicing CRUs That Require Server Power-Off 69
The table below lists the memory speed limitations associated with all the possible
combinations of DIMMs within an individual memory channel.
DIMM Rank Classification Labels
DIMMs come in a variety of ranks: single, dual, or quad. Each DIMM is shipped with
a label identifying its rank classification. The following table identifies the label
corresponding to each DIMM rank classification:
Note – While single-rank DIMMs can be installed in the Sun Server X4-2, Oracle
does not offer any single-rank DIMMs for purchase, either as factory-installed
options or as separately orderable options.
Blue Socket White Socket Speed
Quad-rank LRDIMM Empty 1600 MT/s
Dual-rank DIMM Empty 1600 MT/s
Single-rank DIMM Empty 1600 MT/s
Quad-rank LRDIMM Quad-rank LRDIMM 1600 MT/s
Dual-rank DIMM Dual-rank DIMM 1600 MT/s
Dual-rank DIMM Single-rank DIMM 1600 MT/s
Single-rank DIMM Single-rank DIMM 1600 MT/s
TABLE: DIMM Rank Classifications Labels
Rank Classification Label
Quad-rank LRDIMM 4Rx4
Dual-rank DIMM 2Rx4
Single-rank DIMM 1Rx4
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