Migration Guide: Migrating to SQL Server 2012 Failover Clustering and Availability Groups from Prior Clustering and Mirroring Deployments
Part I – Prescriptive Guidance
This paper provides guidance for customers who prior to SQL Server 2012 have deployed SQL Failover Clustering for local high availability and database mirroring for disaster recovery, and who want to migrate to SQL Server AlwaysOn. It describes the corresponding SQL Server AlwaysOn scenario and the migration paths to SQL Server AlwaysOn. It also contains the important knowledge and considerations that you must know in order to successfully migrate to a HADR solution based on SQL Server AlwaysOn technology, which implements AlwaysOn Failover Cluster Instances for high availability and AlwaysOn Availability Groups for disaster recovery.
Writer: Cephas Lin (Microsoft)
Contributors: Sanjay Mishra (Microsoft), David Smith (ServiceU Corporation), LeRoy Tuttle Jr. (Microsoft)
Technical Reviewers: Prem Mehra (Microsoft), Mike Weiner (Microsoft), Steve Howard (Microsoft), Kun Cheng (Microsoft), Paul Randal (SQLskills)