I was told by my reseller that you can have as many ePO servers as you want. So if you have one licence key then that will work for them all. - As long as you have ePO in your licenced package then you are good to go.
You can use the same key for both test and production servers. Please review the FAQ document for more on the licensing of ePO 4.5 (PD21819)
Q: Will I be able to use the license key for testing as
well as for production use?
A: One license key supports both testing and
Does an organization need to pay for the client systems with McAfee installed within their testing environments? Does that number count against us being compliant with number of client lincenses we own or can I freely install in test environments?
Thank you very much for pointing that out, I thought had read that FAQ, but obviously not!