A server is a computer program or device that is used to manage requests made by other programs, known as clients. There are various categories of servers such as network, database, and file server. For example, a network server is used to gain access to a network, host a website, exchange emails and more. You can always use a personal computer as a server. However, most businesses choose to use a ready-made dedicated server because this type of server is engineered to manage, send and process data round the clock. Moreover, it is more reliable than a PC and offers more than an average desktop computer. Depending on your requirement, you can choose between three types of servers-tower, rack and blade server.