Availability Guide for Application Design

Overview of Server and Network Fault Tolerance
Availability Guide for Application Design—525637-004
2-24
The HP Integrity NonStop NS-Series Server
Provides Another Level of Availability
Figure 2-9. NS-Series Triplex Server Attached to ServerNet
VST091.vsd
Logical
Processor
0
Logical
Processor
1
Logical
Processor
2
Logical
Processor
3
LSU
CPU Slice B
CPU Slice
A
CPU Slice
C
PE 0
PE 0
PE 0
PE 1
PE 1
PE 1
PE 2
PE 2
PE 2
PE 3
PE 3
PE 3
Servernet Y
fabric
ServerNet X
fabric
Mass storage
Fibre Channel
High-Speed
Ethernet
I/O adapter module
ServerNet
adapter
S-Series
I/O Enclosure
Y-ServerNet
P-switch
X-ServerNet P-switch
A B C
LSU 0
X Y
A B C
LSU 1
X Y
A B C
X Y
LSU 2
A B C
X Y
LSU 3
ServerNet
adapter
ServerNet
adapter
ServerNet
adapter