AlwaysOn Availability Groups provide a flexible option for achieving high availability, recovering from disasters, and scaling out read-only workloads. The technology synchronizes data at the database level, but health monitoring and quorum are provided by a Windows cluster.
There are different variations of AlwaysOn Availability Groups. The traditional flavor sits on a Windows Failover Cluster, but if SQL Server is installed on Linux, then Pacemaker can be used. Since SQL Server 2017, AlwaysOn Availability Groups can also be configured with no cluster at ...
