This is how a custom 3 tier MinRole topology looks like. The front-end servers are benefited from MinRole. The custom server role is used to configure custom servers to run majority of SharePoint service applications and reduce the number of servers. Unlike MinRole, the services have to be manually configured on the custom server role. It’s the job of the SharePoint Administrators to configure the required services on the custom server.
Custom HA Topology with Search:
This is how this architecture has been planned,
- Two load balanced servers with Front-end role.
- Two custom servers running distributed cache, User Profile Sync, Secure Store.
- Two servers with Search server role.
- SQL servers configured with always on availability groups.
kishorespadmin 