How many replicas can I have in an AlwaysOn Availability Group 2016?

How many replicas can I have in an AlwaysOn availability group in SQL Server 2016?

AlwaysOn Basic Availability Group (AlwaysOn BAG) An example limitation is BAG only allows to have two replicas (primary and secondary). AlwaysOn BAG provides failover support for a single database only, replacing the database mirroring which is deprecated.

How many replicas can I have in an AlwaysOn availability group?

Up to eight secondary replicas are supported, including one primary replica and two synchronous-commit secondary replicas.

How many synchronous secondary replicas can I have?

To configure an availability group for automatic failover, you need to set both the current primary replica and at least one secondary replica to synchronous-commit mode with automatic failover. You can have up to three automatic failover replicas.

How many synchronous secondary replicas are there in SQL Server 2016?

Up to 8 secondary replicas, including 2 synchronous secondary replicas (SQL Server 2016) Up to 8 secondary replicas, including 2 synchronous secondary replicas (SQL Server 2017) Up to 8 secondary replicas, including 5 synchronous secondary replicas (SQL Server 2019)