MQSeries Adapter High Availability
You can improve availability in the following ways when you use the adapter:
Set up a fault-tolerant hosting environment for BizTalk Server.
Use Windows Clustering with IBM WebSphere MQ.
To ensure that the BizTalk Server MQSeries Adapter is able to communicate with a remote installation of the MQSAgent component, ensure that you have enabled network COM+ access on the BizTalk Serverand server where IBM WebSphere MQ is installed. For more information about enabling network COM+ access, see Microsoft Knowledge Base article number 817065, " How to enable network COM+ access in Windows Server 2003," available at http://go.microsoft.com/fwlink/?LinkId=196580.
There is no requirement to cluster the MQSAgent (MQSAgent2) COM+ application that is used with the BizTalk Server MQSeries adapter. To provide high availability for this component, install the component on each cluster node. If the COM+ application stops, the next call from the client will start it.