© 2010 vmware inc. all rights reserved introduction to vmware virtualization module 2

© 2010 VMware Inc. All rights reserved

Introduction to VMware Virtualization

Module 2

Module 2-2


You Are Here

vSphere Environment

Introduction to VMware Virtualization

VMware ESX and ESXi

VMware vCenter Server

Networking

Storage

Virtual Machines

Operations

Access Control

Resource Monitoring

Data Protection

Scalability

High Availability

Patch Management

Installing VMware ESX and ESXi

VMware vSphere 4.1: Install, Configure, Manage – Revision A

Module 2-3


Importance

VMware vSphere™ is based on many components that a vSphere administrator should be familiar with. This module describes the basic concept of virtualization, the types of virtualization available from VMware®, and the virtual machine. This module then shows you the fundamental components of vSphere and how vSphere can be used in your datacenter.


Module 2-4


Module Objectives

Explain the concept of virtualization

Identify the benefits of using a virtual machine

Describe the role of vSphere in the datacenter and the cloud

Describe the role of a vSphere administrator


Module 2-5


What Is Virtualization?

Virtualization is a technology that transforms hardware into software.

Virtualization allows you to run multiple operating systems as virtual machines on a single computer.

Each copy of an operating system is installed into a virtual machine.

Virtualization is not:

Simulation

Emulation


Module 2-6


How Does Virtualization Work?

A virtualization layer is installed. It uses either a hosted or a bare-metal hypervisor architecture.


hosted or bare-metal architecture

Module 2-7


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.


Module 2-8


Virtualization Using a Bare-Metal Hypervisor

A bare-metal hypervisor system does not require an operating system. The hypervisor is the operating system.


Module 2-9


What Is a Virtual Machine?

From the user’s perspective, a virtual machine is a software platform that, like a physical computer, runs an operating system and applications.

From the hypervisor’s perspective, a virtual machine is a discrete set of files. Main files:

Configuration file

Virtual disk file

NVRAM settings file

Log file

virtual machine


Module 2-10


Why Use Virtual Machines?

Easy to move and copy:

Encapsulated into files

Independent of physical hardware

Easy to manage:

Isolated from other virtual machines

Insulated from hardware changes

Provides the ability to support legacy applications

Allows servers to be consolidated

Virtual machinePhysical machine

Difficult to move or copy

Bound to a specific set of hardware components

Often has a short life cycle

Requires personal contact to upgrade hardware


Module 2-11


Using vSphere


vSphere provides the foundation for any virtual datacenter – small, medium, or large:

Management services:

• VMware vCenter™ Suite

Application services:

• For availability, security, scalability

Infrastructure services:

• VMware ESX™/ESXi

vSphere also provides the major building blocks for VMware vCloud™:

Infrastructure, platform, and software services on demand

Module 2-12


Create a vSphere administration teamand define roles and responsibilities for:

Creating virtual components

Monitoring the vSphere environment

Troubleshooting vSphere problems

Managing updates and changes

Teamwork is the key to success.

Administering Your vSphere Environment


vSphere administrator

storage administrator

network administrator

Module 2-13


Module Summary

Explain the concept of virtualization

Identify the benefits of using a virtual machine

Describe the role vSphere in the datacenter and the cloud

Describe the role of a vSphere administrator


Module 2-14


Key Points

ESX/ESXi uses virtualization layers based on a bare-metal hypervisor architecture.

vSphere provides a solid foundation for any virtual datacenter.

Administering a vSphere environment requires teamwork and cooperation among all administrators in the IT organization.


© 2010 vmware inc. all rights reserved introduction to vmware virtualization module 2

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