RX300 S2 Options Guide 27
Main memory Memory module population
Memory mirroring
Either 4 or 8 identical memory modules are required for memory mirroring:
Figure 6: Diagram Memory Mirroring
I For more information see BIOS-Setup manual (see chapter “Related
publications” on page 117).
Memory
bank
32 1 0
Channel
(module)
ABA B A B A B
population 4 identical memory modules - -
4 identical memory modules 4 identical memory modules
• Supported for 8 DIMMs of DDR2-400 ( PC2-3200 )
– The diagonal mirroring implementation shown below allows bandwidth on
both channels to be fully utilized during normal operation
– Every write to memory is issued twice, one to primary location, and again to
mirror location
– Memory has two full copies of all data and a complete copy on each channel
• System Requirements
– 4 DIMMs with completely identical devices in slots 3 & 4 on each channel
– 4 DIMMs with completely identical devices in slots 1 & 2 on each channel
Lindenhurst MCH
D
IM
M A1
D
IM
M A2
D
IM
M A3
D
IM
M A4
D
IMM
B
1
D
IMM
B
2
D
IMM
B
3
D
IMM
B
4
Channel A
Channel B
Memory Subsystem
Mirror Mirror Primary
Primary
Memory Mirroring with 4 or 8 DIMMs
D
IM
M A3
D
IMM
B
3
DIMM B2
D
IM
M A3
D
IMM
B
3
DIMM A2
DIMM A4
DIMM B4
To Next Page
Loading...
