I have simple concept of dedicated server that is related to secure server. One person or group of people is required to maintain dedicated server network.If traffic increases more than one servers can be installed.
Are you trying to discuss about the security of the dedicated servers or what dedicated servers exactly are ?
From what you have mentioned, it does not seem that you know what is a dedicated server. We have a lot of information about dedicated servers on our blog and the link to the posts is given below. You can go through them.
A dedicated server is a single computer in a network reserved for serving the needs of the network. For example, some networks require that one computer be set aside to manage communications between all the other computers. A dedicated server could also be a computer that manages printer resources. Note, however, that not all servers are dedicated. In some networks, it is possible for a computer to act as a server and perform other functions as well.
Furthermore, the demand for dedicated servers has grown over the years and this competition has created the need for low cost server rentals. But one thing you need to remember, due to the amount of data hosted on a dedicated server, the purchase of an additional backup space is strongly advised.