NonStop NS-Series Operations Guide (H06.03+)

Table Of Contents
Processors and Components: Monitoring and
Recovery
HP Integrity NonStop NS-Series Operations Guide529869-001
9-3
Overview of the NonStop Blade Complex
For Integrity NonStop servers, ServerNet communications are controlled by processor
switch (or P-switch) modules; one for each of the ServerNet fabrics (represented by X
and Y ServerNet Switching blocks in Figure 9-1). P-switches connect input/output
components to the NS-series processors. I/O components usually tap into the
ServerNet fabrics through ServerNet adapters in IOAMs (represented by Modular I/O
blocks in the diagram). These adapters provide the system I/O to fibre channel storage
devices and gigabyte Ethernet communications networks. However, P-switches also
provide connectivity for legacy I/O through I/O enclosures equipped with IOMF2s
(represented by S-Series I/O blocks in the diagram).
Even though the hardware architecture differs from one series of NonStop servers to
another, the Integrity NonStop system can be networked with other NonStop systems
using the same message system and the same network software.
Figure 9-1. Modular NSAA With One NonStop Blade Complex and Four
Processors
CPU
Slice B
CPU
Slice A
CPU
Slice C
VST727.vsd
Logical
Processor
0
Logical
Processor
1
Logical
Processor
2
Logical
Processor
3
PE
0
PE
0
PE
0
PE
1
PE
1
PE
1
PE
2
PE
2
PE
2
PE
3
PE
3
PE
3
LSU
0
X ServerNet
Switching
X
ServerNet
Fabric
External
I/O
Modular
I/O
S-Series
I/O
Y ServerNet
Switching
Y
ServerNet
Fabric
Modular
I/O
S-Series
I/O
LSU
2
LSU
3
LSU
1
LSU
External
I/O
External
I/O
External
I/O