Messaging engine policy assistance provides guidance about creating and configuring messaging engines in a cluster to provide the behavior you require. Messaging engine policy assistance also automatically creates the associated core group policies and other settings. Messaging engine policy assistance is available when you add a cluster as a bus member, or when you administer a messaging engine in a cluster.
For example, you can create and configure messaging engine policies to provide high availability, scalability, or a combination of the two.
You can also use messaging engine policy assistance to create a custom configuration, where you can control how many messaging engines to create and the messaging engine behavior. The associated core group policies are still automatically created, even though you complete some configuration yourself.
Unless you are familiar with this procedure and have used it before, it is preferable to use messaging engine policy assistance.
The high availability messaging engine policy is a predefined messaging engine policy type that is provided when you use messaging engine policy assistance. It helps you to create and configure a messaging engine in a cluster that is a member of a bus when you want the messaging engine to be highly available.
The scalability messaging engine policy is a predefined messaging engine policy type that is provided when you use messaging engine policy assistance. It helps you to create and configure messaging engines in a cluster that is a member of a bus when you require a configuration that is easy to expand for performance or workload sharing.
The scalability with high availability messaging engine policy is a predefined messaging engine policy type that is provided when you use messaging engine policy assistance. It helps you to configure a cluster that is a member of a bus when you require both high availability and scalability in the cluster.
The custom messaging engine policy is a messaging engine policy type that is provided when you use messaging engine policy assistance. It helps you to create and configure messaging engines in a cluster that is a member of a bus when the predefined messaging engine policy types do not meet your needs. You can configure the messaging engine behavior, then the appropriate messaging engine policies are created automatically.