In my previous article, I have explained the step-by-step process of installing SQL Server Failover Clustered Instance. In this article, I will explain how to add a secondary node to the existing failover clustered instance.
Install SQL Server Failover Cluster instance
Once SQL Server is installed on an SQL01.dc.Local node, connect to SQL02.dc.Local and run setup.exe – SQL Server installation wizard opens. In the wizard, select “Installation” from the panel on the left and click on “Add node to a SQL Server failover cluster”. See the following image: