One major feature of SQL Server 2012 Developer Edition is that it provides the full feature set of the Enterprise Edition but is licensed specifically for development and testing rather than production use. A standout technical feature introduced in this version is AlwaysOn Availability Groups Key Feature: AlwaysOn Availability Groups This feature significantly improved high availability and disaster recovery by allowing: Multi-database Failover:
To check your version after installation: Open SSMS, run SELECT @@VERSION . You want 11.0.7xxx . Sql Server 2012 Developer Edition Download Iso