Chapter 4
AlwaysOn Availability Group
Section 4
Prerequisites for Configuring Availability Groups
We'll first look at the prerequisites for the setup and will then do the following: - Set up four Hyper-V VMs; one VM will act as a domain controller and the other three will be the availability group replicas - Set up AlwaysOn AGs As a part of the AlwaysOn availability setup, we'll also configure a domain controller. In a real-world scenario, configuring a domain controller and Windows Server Failover Cluster is part of a System Administrator's job. We'll also talk about modifying an existing availability group such as adding/removing a database from an availability group, modifying backup preferences, and adding a new replica.