For the database role, it is recommended to deploy the latest version of SQL Server, SQL 2008 R2. The following versions of SQL Server are directly supported:
• SQL Server 2008 R2 x64, Standard or Enterprise Editions
• SQL Server 2008 x64 (x86 cannot be used) with SP1 and Cumulative Update 2 or CU5 (or later than CU5—CU3 and CU4 are not recommended), Standard or Enterprise Editions
• SQL Server 2005 with SP3 x64 (x86 cannot be used) and CU3
In addition, depending on whether advanced SQL functionality is required, the following components may also be needed:
• SQL Server 2008 R2, if working with PowerPivot workbooks.
• SQL Server 2008 R2 Reporting Services add-in for Microsoft SharePoint Technologies 2010 (SSRS) to use Access Services for SharePoint 2010.
• Microsoft Server Speech Platform for phonetic name matching to work correctly for SharePoint Search 2010.
• If using the standalone server install option (not recommended), SQL Server 2008 Express with SP1, which is installed automatically.