Sharing a SQL Server

Only one Microsoft Dynamics CRM deployment per instance of SQL Server is supported. This is because each Microsoft Dynamics CRM deployment requires its own MSCRM_Config database, and multiple instances of the MSCRM_Config database cannot coexist on the same instance of SQL Server. If you have multiple SQL Server instances running on the same computer, you can host the databases for multiple Microsoft Dynamics CRM deployments on the same computer. However, this might decrease system performance.

Because Microsoft Dynamics CRM 3.0 does not have a database named MSCRM_Config, you can configure the databases for this version of the product to coexist on the same SQL Server as Microsoft Dynamics CRM 2011 databases. However, to optimize performance we recommend that each version have its own computer that is running SQL Server.