The term Mainframe always doesn’t refer the Mainframe computers; it may also denote the largest type of server that used to describe a style of operations, applications, and operating system facilities. IBM's Mainframe Technology provides large servers for handling a high volume of transactions and input/output operations in parallel. The presence of the Mainframe implies a centralized form of computing, as opposed to a distributed form of computing. The Mainframe is undergoing resurgence as a robust and scalable platform for enterprise applications and databases. The mainframe is central Data Repository or Hub that linked to users through less powerful devices like workstations or terminals, in a corporation's data processing center. It used in business where the data to be processed in large amount and also the process continuous for many times and that requires much CPU cycles, the computers may flunk. Rapid growth in Mainframe processing is due to increase in transaction volumes and workload growth in "traditional" applications, large enterprise databases, as well as new workloads on the Mainframe based on Linux, Java, and Web-based applications.