RSC/MP Installation and Configuration Guide

Best Practices Guide Scenario 3
NonStop host configuration
Multiple TDPs, configured with identical PIPE, TERM, and ACS objects; each
TDP has its backup process enabled
Multiple PIPEMAN processes, each with backup
Multiple NIFs on for each PIPEMAN, configured in such a way that every
PIPEMAN is reachable by either physical network
All host processes running in different CPUs where possible
Workstation configuration
One PIPEMAN process
One NIF
Two network adapters, wired to different networks
Piccolo configured throug h use of the [RESOLVER] section to reach a
particular PIPEMAN instance running on the NonStop host, by attempting
connections through both hostside NIFs as needed
Advantages
This configuration provides better throug hput than does the configuration in
scenario 2 because the load is divided among multiple PIPEMAN processes.
This configuration can tolerate the loss of a host CPU, a network adapter, or
even an entire network.
This configuration provides for quicker recovery in the event of certain
component failures. For example, when a network adapter on the host fails, the
[RESOLVER] entry in the workstation provides a backup address that will, by
design, reach the same instance of PIPEMAN to which the workstation was
connected. The availability of the backup address allows for an earlier
continuation of service to the affected workstation.
Disadvantages
This configuration is more complex tha n the configuration in scenario 2.
This configuration requires more hardware resources.
HP NonStop Remote Server Call (RSC/MP) Installation and Configuration G uide — 52235 8- 013
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