Currently Being ModeratedFeb 4, 2013 1:28 PM (in response to llacan)
A mini server is a very potent device... much faster than a bigger rack server from a few years ago.
I assume you are talking about using it as a file server.
30+ employees is no problem for file sharing.
15+ concurrent VPN could be a resource problem IF they don't use a split-tunnel config (I'm thinking more of saturating your office internet than maxing the server's processor)
Are your clients Mac, PC or both?
Do you plan to use it for services other than VPN and File Sharing?