This product comes pre-bundled with the server license and 5 CALs. If you need additional CALs you may order them seperately. What's new in R2?
SQL Server 2008 Standard is a complete data management and business intelligence platform providing best-in-class ease of use and manageability for running departmental applications.
Built on SQL Server 2008 SQL Server 2008 R2 delivers higher mission-critical scale more efficient IT and expanded reporting and analytics through self-service business intelligence. SQL Server 2008 R2 introduces two new premium editions to meet the needs of large scale datacenters and data warehouses.
A Server License is required for each operating system environment running SQL Server 2008. A User/Device CAL is required when a user or device is directly or indirectly accessing SQL Server. This product comes pre-bundled with 5 CALs. You can order additional CALs if needed.