VIRTUALIZACION
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Transcript of VIRTUALIZACION
2-1
Virtual Infrastructure Overview
Module 2
2-2
You Are Here
2-3
Importance and Module Objectives
• Importance
• Virtualization is a technology that is revolutionizing the computer industry. It is the foundational technology for VMware Infrastructure. This module introduces the topic to students who are new to virtualization.
• Objectives for the learner
• Understand the concept of virtualization
• Identify the differences between host-based virtualization and bare-metal hypervisors
• Identify the benefits of using a virtual machine
2-4
What Is Virtualization?
• Virtualization is a technology that allows you to transform hardware into software.
• Virtualization allows you to run multiple operating systems simultaneously on a single computer.
• Each copy of an operating system is installed into a virtual machine.
• Virtualization is not either of these:
• Simulation
• Emulation
2-5
What Is a Virtual Machine?
• A software platform that, like a physical computer, runs an operating system and applications
• A discrete set of files. These are the main files:
• Configuration file
• Virtual disk file
• File for NVRAM settings
• Log file Virtual Machine
2-6
Benefits of a Virtual Machine
• Difficult to move or copy
• Bound to a specific set of hardware components
• Often has short life cycle
• Requires personal contact to upgrade hardware
Virtual Machine
• Easy to manage
• Isolated from other virtual machines running on the same physical hardware
• Insulated from physical hardware changes
Physical Machine
• Easy to move and copy
• Encapsulated into files
• Independent of physical hardware
2-7
How Does Virtualization Work?
• Allows multiple operating system instances to run concurrently within virtual machines on a single computer
• A virtualization layer is installed. It uses either a hosted or hypervisor architecture.
2-8
Host Operating System-Based Virtualization
A host-based virtualization system requires an operating system (such as Windows or Linux) to be installed on the computer.
2-9
Virtualization Using a Bare-Metal Hypervisor
A bare-metal hypervisor system does not require an operating system. The hypervisor is the operating system.
2-10
ESXi Server Architecture
2-11
VMware Infrastructure Components (1)
2-12
VMware Infrastructure Components (2)
2-13VMware Infrastructure 3: Install and Configure v3.5 Rev BCopyright © 2008 VMware, Inc. All rights reserved.
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