Organizing a cluster

Select which queue managers to link to which full repository. Consider the performance effect, the queue manager version, and whether multiple CLUSSDR channels are desirable.

Having selected the queue managers to hold full repositories, you need to decide which queue managers to link to which full repository. The CLUSSDR channel definition links a queue manager to a full repository from which it finds out about the other full repositories in the cluster. From then on, the queue manager sends messages to any two full repositories. It always tries to use the one to which it has a CLUSSDR channel definition first. You can choose to link a queue manager to either full repository. In choosing, consider the topology of your configuration, and the physical or geographical location of the queue managers.

Because all cluster information is sent to two full repositories, there might be situations in which you want to make a second CLUSSDR channel definition. You might define a second CLUSSDR channel in a cluster that has many full repositories spread over a wide area. You can then control which two full repositories your information is sent to.