I work as a Solution Architect, and I'd like to get some support in sizing hardware for (mainly) bespoke applications (some COTS as well).
The recommended sizing for any given project is usually done by someone else, but I'd like to be able to verify the sizings myself (sometimes the sizings are from vendors); or be able to provide a ball-park sizing when "kite flying" new ideas.
Ideally I'd like a tool (exe or website is fine) that I could plug various parameters into and get a rough answer. Alternatively, any guidance on how to "manually" come up with a decent sizing.
Bonus points for useful info that takes virtualisation into account.
I know to do this isn't trival.