June 2003
Intermediate to advanced
464 pages
10h 33m
English
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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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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.