Introduction to VMware Virtualization

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10 Δεκ 2013 (πριν από 3 χρόνια και 6 μήνες)

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Introduction to VMware Virtualization


Module 2

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You Are Here

VMware vSphere 4.1: Install, Configure, Manage


Revision A


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

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Importance

VMware vSphere 4.1: Install, Configure, Manage


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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.

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Module Objectives

VMware vSphere 4.1: Install, Configure, Manage


Revision A



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

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What Is Virtualization?

VMware vSphere 4.1: Install, Configure, Manage


Revision A


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

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How Does Virtualization Work?

VMware vSphere 4.1: Install, Configure, Manage


Revision A


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

hosted or
bare
-
metal
architecture

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Host Operating System

Based Virtualization

VMware vSphere 4.1: Install, Configure, Manage


Revision A


A host
-
based virtualization system requires an operating system
(such as Windows or Linux) to be installed on the computer.

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Virtualization Using a Bare
-
Metal Hypervisor

VMware vSphere 4.1: Install, Configure, Manage


Revision A


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

the operating system.

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What Is a Virtual Machine?

VMware vSphere 4.1: Install, Configure, Manage


Revision A


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

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Why Use Virtual Machines?

VMware vSphere 4.1: Install, Configure, Manage


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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
machine

Physical
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

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Using vSphere

VMware vSphere 4.1: Install, Configure, Manage


Revision A


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


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Create a vSphere administration team

and 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

VMware vSphere 4.1: Install, Configure, Manage


Revision A


vSphere administrator

storage
administrator

network
administrator

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Module Summary

VMware vSphere 4.1: Install, Configure, Manage


Revision A



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

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Key Points

VMware vSphere 4.1: Install, Configure, Manage


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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.