D3081, D3131, D3082 (RX900 S1)
Technical Manual
33
Features
Figure 8
shows example scenarios for a 4 CPUMEMR configuration with intra-
CPUMEMR mirroring in the event of DIMM failure and/or deactivation.
Figure 8: Intra-CPUMEMR mirroring scenarios after DIMM module failure/deactivation
3.2.2.2
Hemisphere mode
The Nehalem-EX CPU has two memory-controller modes:
●
1 - 4 CPU configuration: Non-Hemisphere mode
●
5 - 8 CPU configuration: Hemisphere mode
In hemisphere mode, the address space of a CPU is subdivided into two
sections called upper and lower hemisphere. Data is distributed over these two
sections for better performance.
As hemisphere mode is used for configurations with more than 4 CPUs, an even
number of CPUs is necessary to configure memory-mirroring.
O
K
O
K
D
isabled
O
K
O
K
O
K
O
K
O
K
O
K
F
ailed
F
ailed
O
K
O
K
O
K
O
K
O
K
O
K
F
ailed
O
K
O
K
O
K
O
K
O
K
O
K
D
isabled
D
isabled
O
K
O
K
O
K
O
K
D
isabled
D
isabled
D
isabled
F
ailed
DI
MM
failure
DI
MM
disabled
Mirroring
pair
D
isabled
F
ailed
Memory
mirroring
enabled
Memory
mirroring
disabled
Memory
mirroring
disabled
Содержание CPUMEMR D3131
Страница 6: ...Technical Manual D3081 D3131 D3082 RX900 S1 ...
Страница 10: ...10 Technical Manual D3081 D3131 D3082 RX900 S1 Introduction ...
Страница 62: ...62 Technical Manual D3081 D3131 D3082 RX900 S1 Features ...
Страница 64: ...64 Technical Manual D3081 D3131 D3082 RX900 S1 Replacing the lithium battery ...
