NEC Express 5800 User Manual page 92

Hardware
(2) Mirroring between processor memory modules
Mirroring should be performed between the adjacent processor memory modules as shown
below.
A1080a-S/A1040a Model: Processor Memory Modules #1 and #2; #3 and #4
A1080a-D Model: Processor Memory Modules #1 and #2; #3 and #4
A1080a-E Model: Processor Memory Modules #1 and #2; #3 and #4; #5 and #6;
A processor memory module with a lower number is mirrored in principle.
Mirroring is not performed regardless of the settings when the adjacent processor memory
module does not exist or the memory capacity differs.
Processor
Memory
Module#1
Processor
Memory
Module#5
PAIR #1
PAIR #3
PAIR #5
PAIR #7
Memory
Controller#1
Processor memory module #1
Processor Memory Modules #5 and #6; #7 and #8
#7 and #8
Processor
Memory
Module#2
Processor
Memory
Module#6
Mirroring between processor memory modules
PAIR #2
PAIR #4
PAIR #6
PAIR #8
Memory
Controller#2
Processor
Processor
Processor
Memory
Memory
Module#3 Module#4
Processor
Processor
Memory
Memory
Module#7 Module#8
PAIR #2
PAIR #1
PAIR #4
PAIR #3
PAIR #6
PAIR #5
PAIR #8
PAIR #7
Memory Memory
Controller#1 Controller#2
Processor
Processor memory module #2
92
Mirroring is not performed
when the corresponding
module is not mounted or
the memory capacities
differ.