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Linux® on the Mainframe
book

Linux® on the Mainframe

by John Eilert, Maria Eisenhaendler, Dorothea Matthaeus, Ingolf Salm
June 2003
Intermediate to advanced content levelIntermediate to advanced
464 pages
10h 33m
English
Pearson
Content preview from Linux® on the Mainframe

7.1. What is z/VM?

To better understand what is going on today, it is sometimes helpful to revisit the past. In this section, we examine what drove the creation of z/VM and why it plays such a key role in Linux on the mainframe.

Virtual machine (VM) technology development started with the IBM System/360 in the mid-1960s. One reason for developing it was the need for testing facilities. Many software programmers could thus test new programs on the virtual hardware simultaneously.

Another factor driving VM development was the need for multiuser systems. Computers were large and costly. Thus, a need arose for an operating system environment that allowed multiple users to use one machine simultaneously in real-time.

To support testing and multiple ...

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ISBN: 0131014153Purchase book