I have 10 servers with just a single user on each. Can I combine them all to a single server to save my OS space? We will maintain the users isolation but don't want to give them feeling like they are on a shared server. Any ideas?
Are you concern about the user authentication or applications? You may create one server for Active Directory and define all users there and use the other servers to connect to the Active Directory (without having to create same users in them).
