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When to use read-scale with SQL server availability groups?
It then forwards the connection request to each of the secondary replicas from the routing list in a round-robin fashion. In SQL Server 2016 (13.x) and earlier, all availability groups required a cluster. The cluster provided business continuity for high availability and disaster recovery (HADR).
Do you need WSFC for read scale availability groups?
Read-Scale availability groups do not require the WSFC component and does not give high-availability or disaster recovery, it only acts as a mechanism (availability groups) to facilitate the synchronization of the databases across multiple servers.
How to create read scale availability group in clusterless?
Execute the command on the primary replica to configure SQL Listener with IP address and port of primary replica in Read-Scale Availability Group. We need to configure Read-Only Routing URL and Routing List for redirecting read-only connections to the secondary replica in a clusterless Read Scale Availability Group.
How does SQL Server always on availability groups work?
SQL Server Always on Availability Groups uses failover clustering to determine the role of an available replica and determine the failover conditions. Each availability group is a resource in the failover cluster, and it continuously monitors the health of the primary replica.
How to scale read-only connections in cluster less?
It helps to scale read-only connections to the secondary replica in a cluster less configuration. SQL Server Always On is a high availability and disaster recovery solution available starting from SQL Server 2012. It requires two or more replica servers configured in Windows Server Failover Cluster.
Why do we need clusters in SQL Server?
In SQL Server 2016 (13.x) and earlier, all availability groups required a cluster. The cluster provided business continuity for high availability and disaster recovery (HADR). In addition, secondary replicas were configured for read operations.