Memory Interleave - Fujitsu PRIMEQUEST 480 System Design Manual

Notes on mounting DIMMs
Note the following points on mounting DIMMs:
DIMMs must be added in sets of four DIMMs. One set is the minimum
configuration unit.
The four DIMMs in each set must be the same type.
When adding DIMMs to a channel, start from Slot #0.
The DIMMs in a channel mounted only to Slot #1 are isolated by the initial
diagnosis at boot.
If the initial diagnosis detects a fixed one-bit error in a DIMM during normal mode
operation, isolation of the DIMM is by the unit of addition (four modules). For
this reason, it is recommended to mount two sets of DIMMs or more (eight
modules or more).
2.2.2.1

Memory interleave

Memory interleave is technology that improves data throughput by distributing
memory access to different DIMMs.
C122-B001-02EN
2.2 System Board (SB)
2-9