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Provides information on availability replica roles assigned, failover and availability modes Replica, Roles assigned, Failover mode, Availability Modes selected, and the connection mode type selected in secondariesSecondary Connection Mode.
Availability databases table
Provides information on the database failover Database, Failover readiness, and synchronization state Synchronization State of the availability databases contained within the selected availability replica.
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You should run the Availability Group Topology report to keep track of modifications made to your current AlwaysOn availability groups and avoid any potential setbacks to your high-availability and disaster recovery strategies.