Not sure if some of you have already come across this tool. So instead of reading the whole capacity-planning documentation, you can get a rough idea of your hardware needs and farm topology design. Just enter information such as the number of users, locations, bandwidth and network topology, preferred hardware, and usage profiles. After you provide the tool with basic information about your organization, the tool provides a first approximation of the topology your organization needs.
Good tool for infrastructre guys!
Download Here or follow the link: