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Virtual Appliances and the Open Virtualization Format

Oct 27, 2009, 15:04 (0 Talkback[s])
(Other stories by M. Tim Jones)

"Let's start with a quick discussion of the key behind virtual appliances: the virtualization platform. Although operating systems represent a virtualization platform for applications (sharing access to the processor and resources), hypervisors do the same thing for operating systems. Hypervisors are important, because they allow you to run multiple, different operating systems on the same system. From the perspective of a desktop user, this ability is important, because it allows them to run Windows and Linux concurrently. But from the perspective of a server, it permits hosting multiple operating systems running a variety of server applications concurrently (such as Web servers, e-mail applications, databases, and other useful services). Further, each operating system is isolated from one another, so a fault in one does not affect any other."

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