Depending upon your environment, you can deploy the Session Recording components in different scenarios.
A Session Recording deployment does not have to be limited to a single site. With the exception of the Session Recording Agent, all components are independent of the server site. For example, you can configure multiple sites to use a single Session Recording Server.
Alternatively, if you have a large site with many agents and plan to record many graphically intense applications (for example, AutoCAD applications), or you have many sessions to record, a Session Recording Server can experience a high performance demand. To alleviate performance issues, you can install multiple Session Recording Servers on different computers and point the Session Recording Agents to the different computers. Keep in mind that an agent can point to only one server at a time.