As an alternative to using a simple DFS share, you can also host App-V packages on an Internet Information Services (IIS) web server. Doing this gives you the added benefit of caching the App-V packages in RAM, which allows for multiple loads of the same package on multiple clients to be faster than just hosting the package on a network share.
Using NLB and hosting the packages on a DFS share allows the web servers to have a fault-tolerant configuration.
This recipe assumes that you have provisioned and domain-joined two web servers with the names WEB1 and WEB2, respectively. You will need administrative permissions on both WEB1 and WEB2 as well as the ability to create a DNS entry.