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

Question

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) 11 февр. 2020 г.

How many synchronous secondary replicas can I have in always on?

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 secondary replicas are there?

Two types of availability replicas exist: a single primary replica and one to eight secondary replicas.

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

Limitation #2: You can only have two replicas – primary and secondary - per Basic Availability Group.

How many secondary replicas are supported by an AlwaysOn availability group?

In SQL server 2012, It supports up to 4 secondary replicas, while in SQL Server 2014, it supports up to 8 replicas. The primary replica is primary source server or production server. A secondary replica is a server which maintain a backup copy of the primary server availability database.

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