Integration Server versions

All Integration Servers in the cluster must be the same version, with the same service packs and fixes applied.

Adapter packages

All WebSphere MQ Adapter packages on one Integration Server should be replicated to all other Integration Servers in the cluster.

Adapter versions

All WebSphere MQ Adapters in the cluster must be the same version, with the same service packs and fixes applied.

User-defined adapter packages

Each package that you have configured containing adapter connections, adapter services, flow services, listeners, triggers, and notifications for WebSphere MQ Adapter, must exist on all of Integration Servers in the cluster, so that all Integration Servers in the cluster can handle any given request.

To ensure consistency, we recommend that you create all packages on one server, and replicate them to the other servers. If you allow different servers to contain different services, you might not derive the full benefits of clustering. For example, if a client requests a service that resides in only one server, and that server is unavailable, the request cannot be successfully redirected to another server.

For information about replicating packages, see the chapter on managing packages in the webMethods Integration Server Administrator’s Guide for your release.