148 Upgrade and Maintenance Manual BX924 S4
Main memory
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8.1 Basic information
– The system board is equipped with 24 memory connectors
(12 connectors per CPU).
– In mono processor configurations only 12 memory connectors are usable.
– The system has to be equipped with at least one memory module per
processor.
– Supported capacities: 4 GB, 8 GB, 16 GB, 32 GB or 64 GB
– Maximum amount of RAM: 1536 GB
– Supported memory modules:
8.1.1 Memory sequence
8.1.1.1 Population rules
– Populate memory slot 1 / channel A (DIMM 1A) first.
– In case of dual processor configurations, populate memory slot
1 / channel E (DIMM 1E) second.
– Within all channels, memory slot 1 must be populated prior to slot 2.
Slot 2 must be populated prior to Slot 3 (for all CPUs).
– If memory modules with different ranks are used, always populate the higher
number rank DIMM first (starting from slot 1).
Type
Ranking
1
1
1R: Single-Rank, 2R: Dual-Rank, 4R: Quad-Rank, 8R: Octa Rank
Error
Correction
1R 2R 4R 8R
DDR3-1066
PC3-10600
DDR3-1333
PC3-12800
DDR3-1600
PC3-14900
RDIMMs
(Registered
DIMMs)
xxx
ECC or non-
ECC
LRDIMMs
(Load-Reduced
DIMMs)
xx
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