What is AlwaysOn availability groups in SQL Server?

What is the difference between database mirroring and AlwaysOn availability groups?

With mirroring you must manually create those objects on the mirror server. AlwaysOn can combine multiple databases as a unit that can be failed over together. This is called the Availability Group.

What is HA in SQL Server?

Advertisements. High Availability (HA) is the solution\process\technology to make the application\database available 24x7 under either planned or un-planned outages. Mainly, there are five options in MS SQL Server to achieve\setup high availability solution for the databases.

What is Dr in SQL Server?

SQL Server Disaster Recovery. The primary goal of Disaster Recovery is to provide service continuity in case of any geographical disasters by recovering or resuming the services from a geographically different location. DR can be either located in one or more locations in addition to the primary location.

Does SQL AlwaysOn require clustering?

SQL Server Always On is a flexible design solution to provide high availability (HA) and disaster recovery (DR). It is built upon the Windows Failover Cluster, but we do not require the shared storage between the failover cluster nodes.