SQL Server 2016 AlwaysOn Availability Group Enhancements: Multiple Automatic Failover Targets

Overview SQL Server 2104 and SQL Server 2012 can have two synchronous secondary replicas. One synchronous secondary replica can serve the role as automatic failover partner with the primary replica. In SQL Server 2016 both synchronous secondary replicas can be configured as automatic failover partners with the primary replica. Benefits This will allow following benefits This increases the chances…


SQL Server 2016 AlwaysOn Availability Group Enhancements: Load Balance Read-Only Routing

Overview SQL Server 2104 and SQL 2012 read-only routing directed traffic to the first available replica in the routing list, unless it was not accessible, and then it would direct the connection to the next replica in the routing list. When you have multiple secondary replicas available for read, it is not possible to spread…


SQL Server 2016 AlwaysOn Availability Group Enhancements: Initial Data Synchronization Without Database and Log Backup

Overview In SQL Server 2012 and 2014, initializing a secondary replica is cumbersome to do manually, and requires backup and restore of your database and transaction log from the primary to a network share, and then a restore of the database and log backup files to the secondary replica. The availability group wizard can automate…


SQL Server 2016 AlwaysOn Availability Group Enhancements: Basic Availability Group on Standard Edition

Basic Availability Group on Standard Edition Historically, SQL Server database mirroring offered high availability of a SQL Server database. AlwaysOn availability groups has supplanted database mirroring as the future of high availability in SQL Server, meanwhile, database mirroring has been marked for deprecation. As database mirroring is deprecated, SQL Server 2016 introduces AlwaysOn Basic Availability…