# RD Session Host types

Beginning with Parallels RAS v16.5, you can create and add to a RAS Farm the following types of RD Session Hosts:

* Individual servers. These can be physical boxes or virtual machines treated as physical servers. For information on how to create these types of servers, see [**Adding an RD Session Host**](https://docs.parallels.com/landing/ras-admin-guide/parallels-ras-21-administrators-guide/getting-started-with-parallels-ras/set-up-a-basic-parallels-ras-farm/add-an-rd-session-host).
* Virtual machines (VMs) created from a template, which is a part of RAS Virtual Desktop Infrastructure (VDI). The main advantage of using VMs is the ability to create as many of them as you require from a single template. For information on how to create these types of servers, see **Add a template-based RD Session Host**.

Considering that template is a part of RAS VDI, some aspects of creating, provisioning, and managing RD Session Hosts based on a template differ from the regular RD Session Hosts (individual servers). When reading these sections, please pay attention to whether or not a particular functionality applies to RD Session Hosts based on a template.