The MSDTC service is not clustered. Beginning with Windows Server 2008, SQL Server Setup does not require MSDTC to be clustered. ...

The MSDTC service is not clustered. Beginning with Windows Server 2008, SQL Server Setup does not require MSDTC to be clustered. For more information about the benefits of clustering MSDTC, see http://technet.microsoft.com/en-us/library/cc730992(WS.10).aspx. On earlier operating systems, the MSDTC service must be clustered for SQL Server Setup and other SQL Server features to work correctly. You can cluster the MSDTC service using the Windows Cluster Administrator MMC snap-in.