Introduction
In earlier releases of VMware View, RDS Desktop Pool was known as Microsoft Terminal Services pool. In comparison to desktop provisioned in an automated desktop pool where desktops are based on a virtual or physical machine, RDS desktops are based on session to an RDS host. Each RDS host is a windows server that can host multiple RDS Desktops. An RDS Desktop pool is always associated with a farm, VMware View provides load balancing of the RDS Host in a farm by directing connection requests to the RDS host that has the least number of active sessions. An RDS desktop supports the RDP, PCoIP, and VMware Blast display protocols. You can also configure HTML access in case needed.
Prerequisite
- Automated or Manual Farm should already be created. (If not already created, you will be asked to create Farm during Pool creation process)
- RDS host status should be in Available.
Step by Step Creating RDS Host Pool
Login to VMware Horizon Admin Console. Go to Catalog –> Desktop Pools and Click on Add.
Choose RDS Desktop Pool from the list and Click on Next.
Provide appropriate Pool ID and the Display Name of the pool.
Configure the Desktop Pool Settings as per organization requirements. In Lab, I kept the settings default. Click Next to proceed further.
Choose the Farm from the list and click Next.
Review the configuration and click on Finish.
Once created, new RDS pool will be available for entitled users.
Entitle the users to the pool. 
Once entitled user will be able to login to RDS pool. 
Conclusion
In this post, I covered the process of creating Remote Desktop Service Desktop pool using exiting Farm. A RDS pool can have either Automated or Manual Form as an backend. You cannot configure Automated and Manual Farms together as an backend to a single pool.
I hope this will be informative for you. Thanks for visiting. Happy Learning 🙂