Virtualization means many things to many people. A big focus of virtualization currently is server virtualization, or the hosting of multiple independent operating systems on a single host computer. This article explores the ideas behind virtualization and then discusses some of the many ways to implement virtualization. We also look at some of the other virtualization technologies out there, such as operating system virtualization on Linux.
To virtualize means to take something of one form and make it appear to be another form. Virtualizing a computer means to make it appear to be multiple computers or a different computer entirely.
Virtualization also can mean making many computers appear to be a single computer. This is more commonly called server aggregation or grid computing.
Let's begin with the origins of virtualization.read more