Originally Posted by macguru
Is it possible to install v3 on the same server where v2 already is? So if something went wrong, I could just stop v3 and continue wit v2.
Thats not possible as they use a completely different system setup.
My recommendation would be (if possible) o use the current server with ISPConfig 2 until you want to switch to a new server hardware and then install ispconfig 3 on this new server hardware and migrate the accounts then, so you have the old server as fallback until everything is migrated to the new system.