IT.Auditing.Using.Controls.to.Protect.Information.Assets.2ndEd-2011 by Unknown

Author:Unknown
Language: eng
Format: azw3
Published: 0101-01-01T00:00:00+00:00

IT Auditing: Using Controls to Protect Information Assets, Second Edition 280

Figure 11-1

Virtualization model

Virtualization software can be installed onto a bare metal server or as an application on top of another operating system. Many vendors allow the hypervisor to be installed either way, on top of the OS or by itself, without the hassle and overhead of the OS. The software is designed to utilize embedded processor instructions specifically designed to support multiple operating systems. Processor manufacturers led this charge a few years ago, and the highly customized hardware packages by Cisco Systems, VMware, and other global players foretell the intent to package as much power, security, and management as possible into the hardware to support virtual infrastructures. Gartner believes—

and the readers of this book will know—that by the time this book is published and distributed, more than 50 percent of the world’s servers will be virtualized.

Commercial and Open Source Projects

Several commercial players are in this market, including VMware, Microsoft, Citrix, Oracle, Parallels, Red Hat, and Novell. Some of these players maintain open source projects, including Xen by Citrix and VirtualBox by Oracle-Sun Microsystems. KVM is a popular open source virtualization project for Linux. Links to each of these projects are located in “Knowledge Base” at the end of the chapter.

Virtualization Auditing Essentials

To understand the material in this chapter, you need a basic understanding of the components that make up the virtualization environment. Your role as an auditor and

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