Fujitsu PRIMERGY RX2540 M1 - Mirrored and Performance Modes; Rank Sparing Mode

RX2540 M1 Upgrade and Maintenance Manual 275
Main memory
10.1.1.3 Mirrored and performance modes
Notes on Mirrored Channel and Performance modes
– Always populate memory modules in triples.
– Same numbers mean identical modules (capacity, rank).
10.1.1.4 Rank Sparing mode
Single-/Dual-Rank RDIMMs
CPU CPU 1 CPU2
channel A B D C E F H G
DIMM 1A 2A 3A 1B 2B 3B 1D 2D 3D 1C 2C 3C 1E 2E 3E 1F 2F 3F 1H 2H 3H 1G 2G 3G
#
1 CPU populated
4 1 1 1 1
8 1 2 1 2 1 2 1 2
12 1 2 3 1 2 3 1 2 3 1 2 3
2 CPUs populated
8 1 1 1 1 2 2 2 2
12 1 3 1 3 1 3 1 3 2 2 2 2
16 1 3 1 3 1 3 1 3 2 4 2 4 2 4 2 4
20 1 3 5 1 3 9 1 3 5 1 3 5 2 4 2 4 2 4 2 4
24 1 3 5 1 3 9 1 3 5 1 3 5 2 4 6 2 4 6 2 4 6 2 4 6