A server administrator, or admin has the overall control of a server. This can be in the context of a business organization, where often a server administrator oversees the performance and condition of multiple servers in the business, or it can be in the context of a single person running a game server.
The admin for a server typically represents the owners and financiers of the server. Alternatively, an owner can grant administrator rights to a regular player (or clan member) on the server.
You can also work as an Server Admin and be the brain of a company.
The Server Administrator's role is to design, install, administer, and optimize company servers and related components to achieve high performance of the various business applications supported by tuning the servers as necessary. This includes ensuring the availability of client/server applications, configuring all new implementations, and developing processes and procedures for ongoing management of the server environment. Where applicable, the Server Administrator will assist in overseeing the physical security, integrity, and safety of the data center/server farm. [1]