Issues:
SharePoint 2010 Foundation and Server require the Cumulative Update Package 2 for SQL Server 2008 Service Pack 1 to use SQL Server 2008 as the backend Database.
Solution:
SQL Server 2008 will not install properly on Windows 2008 Server without SQL Server 2008 Service Pack 1. Download Download SQL Server 2008 Service Pack 1.
To use SQL Server 2008 for the backend database for SharePoint Foundation or Server download Download and Install Cumulative Update Package 2 for SQL Server 2008 Service Pack 1.
Note: Installing the Cumulative Update Package 2 for SQL Server 2008 Service Pack 1 will update SQL Server’s build number to 10.00.2714.
Additional Information:
Fixes Contained in the Cumulative Update