A server room is a room used to store, power and operate computer servers and their associated components. This room is part of a data center, which typical houses several physical servers lined up together in different form factors, such as rack mounted, or in tower or blade enclosures. A data center might consist of several server rooms, each of which is used for separate applications and services.
Techopedia explains Server Room
A server room provides the operational and environmental components and services to operate enterprise class servers. Generally, a server room might include 10 to several hundred servers. The servers housed in a server room usually include basic CPU components and lack any display or input device. They can all be centrally accessed and managed through a server administrator system, which is typically found outside the server room.
Server rooms are primarily used for executing enterprise applications that require massive computing resources at run-time, such as banking software, search engines or social networking applications. A server room is designed to provide a continuous and redundant supply of electrical power, backup/alternate power, lighting and air conditioning, and is monitored by one or more server administrators. Moreover, server rooms tend to include protections against earthquakes, fires and other natural disasters, and should be designed to accommodate expansion.