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Xen Virtualization by Prabhakar Chaganti

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Chapter 1. Introduction

Virtualization is a technique of partitioning or dividing the resources of a single server into multiple segregated execution environments. Each of these environments runs independently of the other, thus allowing multiple operating systems to run on the same hardware. This concept has been widely used in the world of mainframe computers over the years, and is now gaining a lot of traction in the world of enterprise IT systems. Each execution environment is called a guest and the server on which they execute is called the host. The software running on the host that acts as a bridge between the host and the guests, and that enables these multiple execution environments is commonly referred to as the Virtual Machine Monitor ...

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