Even though every customer is different and every environment is specific to the needs of the company that will be using it, there are some general rules of thumb when a new system is built. The first one (and I can't repeat this enough) is testing, testing, and testing.
In IT, a design is only as good as the worst possible scenario that can happen in your environment. While you cannot completely anticipate or prevent an outage before it occurs, if you do thorough testing before placing your system in production, you can rectify many issues and inconsistencies before they ever have a chance to impact your users. To start small, first you need to validate an architecture and ensure that the XenApp solution was built as designed. If any requirements have changed along the way, they need to be accounted for and the design needs to be adjusted to satisfy them. For instance, if the environment was initially built for 600 users, but all of...