We've been using load balancers from Loadbalancer.org on our high traffic Web application since 2004 - and never had a single failure. The hardware and software has performed flawlessly for over 10 years. It was easy to setup and has been easy to maintain. And the support has been fantastic. I have no reservations recommending this product to anyone who needs a HA load balancer solution.

Brook Davies

Logiforms Software

Load Balancing Microsoft Remote Desktop Services

Remote Desktop Services accelerates and extends desktop and application deployments to any device, improving remote worker efficiency, while helping to keep critical intellectual property secure and simplify regulatory compliance. Remote Desktop Services enables virtual desktop infrastructure (VDI), session-based desktops, and applications, allowing users to work anywhere.

The load balancer is deployed in front of the various RDS servers to provide load balancing and fail–over functionality. Clients then connect to a Virtual Service (VIP) on the load balancer rather than connecting directly to a one of the RDS servers. These connections are then load balanced between the associated RDS servers to distribute the load according to the load balancing algorithm selected.

In Windows 2008 R2 and Windows 2012 the following role services can be load balanced :

RD Session Host
RD Connection Broker
RD Gateway
RD Web Access Server

Useful Links:

Overview:
Overview of Remote Desktop Services (2008 R2)
Overview of Remote Desktop Services (2012)

Gateway:
Create a Remote Desktop Gateway Farm
What’s new in RD Gateway 2012

Web Access:
Overview of Remote Desktop Web Access

Connection Broker:
Overview of Remote Desktop Connection Broker
About IP Address and Token Redirection

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