Fujitsu PRIMERGY RX2530 M1, Upgrade And Maintenance Manual, Page: 226 / 372

226 Upgrade and Maintenance Manual
RX2530 M1
Main memory
10.1.1 Population rules
– Populate memory slot 1 / channel A (DIMM 1A) first.
– In case of dual processor configurations, populate memory slot
1 / channel D (DIMM 1D) second.
– Within all channels, memory slot 1 must be populated prior to slot 2.
(for all CPUs).
– If memory modules with different ranks are used, always populate the higher
number rank DIMM first (starting from slot 1).
– If memory modules with different capacities are used:
– Populate modules with higher capacities first.
– Within a channel, populate modules in descending order of capacity.
– If memory modules with different speeds are used, the lowest clock rate
applies for all DIMMs. Regardless of the mode, all DIMMs will run at the
highest common frequency that is allowed by the SPD Data of the DIMMs
and the maximum speed of the selected configuration.
– RDIMMs and LRDIMMs are allowed.
– Only ECC DIMMs are allowed.
– Mixing of quad-rank DIMMs in one channel and three DIMMs in another
channel (3DPC) on the same CPU is not allowed.