Take the scenario whereby you have a Windows 2008 Cluster used as a SQL Database Cluster. A common requirement of SQL Server is a Transaction Manager (MSDTC). If your configuration is to have one clustered instance of MSDTC in its own resource group...

On a Windows 2003 cluster you can only ever have one instance of MSDTC running on the cluster at any one time. For this reason and to ensure the running instance of MSDTC is available to all nodes in the cluster, it must be configured as a clustered resource...

On a Windows 2003 Cluster environment, if you have an application (e.g. COM+, winforms etc) which runs under a non-administrative account and trys to start Distributed Transactions (using MSDTC), you may find it will fail. Below are a few of the errors...