Exploring high availability in BizTalk
High Availability (HA) is the ability of an environment to deal with failures or outages without causing service or processing interruptions. For example, failures would be the loss of servers or services within the environment. BizTalk gives us a good degree of high availability inherent in the group concept, but the same is not true for SQL Server, or some of the other services involved in our BizTalk installation. The following are some examples of how to make your BizTalk installation highly available. There is an excellent poster available from Microsoft that details scaling out BizTalk Server that is located at http://www.microsoft.com/download/en/details.aspx?id=15223.