Sharing info on MQ Cluster

A cluster is a network of queue managers that are logically associated in some way. In a Web Sphere MQ network using distributed queuing without clustering, every queue manager is independent. If one queue manager needs to send messages to another it must have defined a transmission queue and a channel to the remote queue manager.If you group queue managers in a cluster, the queue managers can make the queues that they host available to every other queue manager in the cluster.

Then, assuming that you have the necessary network infrastructure in place, any queue manager can send a message to any other queue manager in the same cluster without the need for explicit channel definitions, remote queue definitions, or transmission queues.There are two different reasons for using clusters: to reduce system administration and to improve availability and workload balancing.