On April 21st, Microsoft Download Center started offering SQL Server 2008 R2 RTM – Express; Microsoft SQL Server2008 R2 RTM – Express with Advanced Services; Microsoft SQL Server 2008 R2 RTM – Express with Management Tools and Microsoft SQL Server 2008 R2 RTM – Management Studio Express. Customers who already have been leveraging Microsoft’s free version of SQL Server are undoubtedly already familiar with the downloads. Peter Saddow writes about the deployment options of SQL Server 2008 R2 Express, including performing a clean install, upgrading or embedding the data platform. “Some SQL Server configuration settings can only be set during install. Once the installation is complete, you cannot change these settings. Any change to the configuration settings would require a new installation of the product. Some settings directly impact how data is stored and organized so changing the configuration setting would require significant data manipulation work in order to preserve the data,” Peter explained.