WebSphere® Telecom Web Services
Server (TWSS)
has multiple components that should be distributed across multiple
servers in the network.
It is common but not required, to install the Access Gateway in
a different cluster from the Service Platform components and
the Web service implementations.
The Service Policy Manager can
be installed in the same cluster with the Service Platform components and
the Web service implementations,
or in a separate cluster of its own.
Most components require database tables for storing data. A single
database server can be used for all the components, but for performance
and failover, the database tables can be distributed across multiple
servers. The components include:
- Access Gateway:
Provides default message processing flows to define how calls flow
to the applications and from the applications back out. The Access Gateway must
be installed on the server where you have WebSphere Enterprise Service
Bus installed.
- Service Policy Manager:
Provides a way to manage policies for the Service Platform components and Web service implementations.
The installation instructions assume that you are installing Service Policy Manager on
the same node where you installed theWebSphere Enterprise Service
Bus.
- Service Platform components and Web service implementations:
These are deployed as enterprise applications on WebSphere Application Server.
The Service Platform components are
used by Web service implementations and
must be deployed on the same server. The Web service implementations provide
additional functionality, and you can deploy only those that are needed
in your network.
For many installations, it is appropriate to run with all of the
TWSS components on a single cluster. Others will find it more effective
to deploy the components on separate clusters. This information center
includes installation scenarios for both cases.
The instructions in this section assume that you are configuring
the database tables on a dedicated database server. The First Steps script will
create the necessary tables for the selected set of services in a
single database instance. If a distributed database instance is desired,
database DDL files and scripts are provided to assist with the table
creation.