Hello, My company uses Plesk to configure sites, whose are stored in MediaTemple. Recently i see the solution of ISP Config, i think that is very good. My question is, if i install ISP Config in my VPS, it will not be in conflict with Plesk? It don´t damage my system? PS: My VPS uses CentOS Thanks.
You can not run two control panles in the same vps. So if you want to use ispconfig you will have to reinstall the server first as described in the ispconfig installation instructions and remove plesk.
What I'd do is to make a copy of that VPS if possible for you, start this in a VM on your local site and to play around with the "migration" so that this will result in a plan for your, how to migrate you VPS the best.