There is no upper limit per see. Its all depends how you setup, which OS, hardware, and a lot of other things, how fast/slow you can setup the system.
You can read about some of our customer stories where there is some numbers from them. For example the Sabre story at
I also suggest that you use the "contact us" form at, to further discuss your use-case with a rep from us, in more private forms. They may be able to tell you more, over a phone, vs in written form:
Thanks for your answer, I'll search for testing results...