How many SQL instances can be installed in a cluster?

Question

You can install as many as 50 SQL Server instances on a Windows Server; obviously, we do not recommend this. In a Windows failover cluster, the maximum number of SQL Server instances is reduced by half if you're using shared cluster drives. Only one of the SQL Server instances on a server can be the default instance. 16 апр. 2020 г.

How many SQL Server instances can you add in a cluster?

SQL Server supports up to fifty single instances on one server and up to 25 Failover Cluster Instances on a Windows Server Failover Cluster. Different versions of SQL Server can be stacked on the same environment to provide a robust environment that will support different applications.

Can multiple SQL Server instances run on the same server?

Yes, we can use multiple instance of SQL Server of same machine/server. All instances of the database engine other than the default instance are identified by an instance name specified during installation of the instance.

How do I install multiple instances of SQL Server?

Run the SQL Server installation wizard. On the Instance Name panel of the installation wizard, select Named instance, and then specify a new instance name in the field. Edit your firewall configuration to allow the new instances to communicate through their listening ports.

Can I install multiple instances of SQL Express?

As long as each SQL Server instance is installed as a unique named instance, there should be no conflict between them. Each SQL Server instance is installed to a separate directory. Blackbaud's Express installations each install with their own instance name.

Expert · Answer