WebSphere Application Server Network Deployment, Version 6.1.x
Operating Systems: AIX, HP-UX, i5/OS, Linux, Solaris, Windows, z/OS
Learning about high availability and workload sharing
Use these topics to learn about high availability and workload
sharing.
Subtopics
WebSphere Application Server high availability
The WebSphere Application Server high availability framework
eliminates single points of failure and provides peer to peer failover for
applications and processes running within WebSphere. The WebSphere Application
Server high availability framework also allows
integration of WebSphere Application Server into an environment that may be
using other high availability frameworks,
such as HACMP, to manage non WebSphere resources.
Service integration high availability and workload sharing configurations
The configuration of service integration is very flexible.
There can be individual messaging engines, or clusters that contain
multiple messaging engines, where those messaging engines can share
workload, be highly available, or do both.
Workload sharing
You can share workload between multiple messaging engines in
the service integration environment.
Service integration error types
There are four types of error that can occur in service integration:
errors that a messaging engine can recover from while it is running, errors
that can be resolved by an automatic restart of the messaging engine, errors
that require a user to intervene, and errors that are not detectable in the
messaging engine.
External high availability frameworks and service integration
You can configure an external high availability framework, such
as IBM HACMP, to manage a messaging engine as if it were a resource in the
external high availability framework's resource group.
High availability of messaging engines that are connected to WebSphere MQ
You can connect a messaging engine to a WebSphere MQ queue manager
so that, to WebSphere MQ, the messaging engine appears to be another queue
manager. If you connect a messaging engine in this way, there are some high
availability considerations that you need to take into account.