Mainframe Operating System

A Journey through History of Mainframe Operating System IBM Mainframe operating systems own a heritage of ongoing innovation and enhancement spanning over the last four to five decades. The operating systems developed over this period have always risen up according to the changing technological pulses and growing market requirements. From GM-NAA I/O of 1950’s to the upcoming Windows on System z, the journey of Mainframe operating system is quite fascinating. Let us see, what is mainframe OS, how does it differ from normal OS and how the journey was from where it started to where it is now. We have covered this journey in two parts for our readers.