I’ve recently been taking a look at virtualization and The IBM Virtualization Engine platform, and I’ve got to say that I am very impressed with the concept behind it. I’d really like to hear from people who have implemented it to see how successful they have found it to be.
Virtualization started life in the late 1960s with the original implementation of VM/CMS. The problem that VM/CMS solved was how to let lots of people work at the same time on the fairly limited hardware that was available. It was not unknown in those days for developers to book slots on the hardware to do their work. CMS (Conversational Monitoring System) was developed at Cambridge and gave each person sitting at a terminal their own virtual computer. They had disks, memory, processing power, and things like card readers and card punches, all apparently available to them. They would do their work and VM (Virtual Machine) would run as a hypervisor (rather than an operating system as such) and dispatch the different virtual machines running according to priorities it was given.
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