This popular tool by Andre Leibovici can help you with performing calculations concerning the sizing of your VDI environment. It provides nearly 60 different inputs to come up with a result set. It's a comprehensive VDI tool that asks for details such as the number of VMs, the VM type, and other sizing information. You would also input the number of pools, parent VMs, and snapshots along with host information such as sockets per host, cores per socket, and VMs per core. Continue by inputting display protocol information, IOPS information, storage array capabilities, and more. For more detailed information on this valuable tool, visit the website for the online manual (http://myvirtualcloud.net/?p=1927).

While no design requires the use of these tools, the more you know about the current physical environment the better chance you have at providing a successful VDI solution.