Upgrading to SQL Server 2008 R2
You can upgrade instances of SQL Server 2000, SQL Server 2005 or SQL Server 2008 to SQL Server 2008 R2. Before running SQL Server Setup to upgrade to SQL Server 2008 R2, review the following topics about the upgrade process.
Documents installation requirements, system configuration checks run by SQL Server Setup, and security considerations for a SQL Server installation.
Documents supported upgrade paths to SQL Server 2008 R2.
Describes Upgrade Advisor, a tool that analyzes instances of SQL Server 2000, SQL Server 2005, and SQL Server 2008 to identify known upgrade issues.
Provides links to procedural topics for upgrading to SQL Server 2008 R2.
This section describes the considerations for side-by-side installations of SQL Server 2008 R2 and SQL Server 2008.
Lists the significant changes that might affect your applications after you upgrade to SQL Server 2008 R2.