It indicates that you will only be able to manage about 80 2MP cameras at 10fps using the h.264 CODEC per server.
You will need multiple servers.
For a project of that size I would recommend discussing it with the manufacturer to ensure the optimum server/software design.
And, make sure that you tell them your whole requirement - things such as monitors, viewing stations e.g. number of viewing locations, and monitor walls (how many monitors displaying what, where) that you require can have a big impact upon the solution.