Creating Virtual Infrastructure Machines

8/4/2019 Creating Virtual Infrastructure Machines

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2009 VMware Inc. All rights reserved

Title of PresentationPresented by:


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Creating Virtual Machines

Virtual machines are a core component of a virtual infrastructure.

VMware vSphere includes to the ability use templates to quickly

provision virtual machines. A template is created by creating,

configuring, and testing a virtual machine, and then converting it to

template format. Templates reduce deployment time and costly

mistakes when you deploy additional virtual machines.

First.. A look at the infrastructure.


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Using vSphere

vSphere provides the foundationfor 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 majorbuilding blocks for VMware

vCloud:

Infrastructure, platform, and

software services on demand


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What Is Virtualization?

Virtualization is a technology thattransforms hardware into software.

Virtualization allows you to run multipleoperating systems as virtual machineson a single computer.

Each copy of an operating system is

installed into a virtual machine.

Virtualization is not:

Simulation

Emulation


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Host Operating SystemBased Virtualization

A host-based virtualization system requires an operating system

(such as Windows or Linux) to be installed on the computer.


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Hypervisor Architecture

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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What Is a Virtual Machine?

virtual machine


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What Is a Virtual Machine?

From the users perspective, avirtual machine is a softwareplatform that, like a physicalcomputer, runs an operatingsystem and applications.

From the hypervisorsperspective, a virtual machine isa 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?

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 copyBound to a specific set ofhardware components

Often has a short life cycle

Requires personal contact

to upgrade hardware


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Virtual Machine Hardware

Up to 4CD-ROMs

Up to 3 ports Up to 4 ports

110 NICs

14 SCSI adapters;

115 devices per adapter

Up to255GBRAM

1 floppy controllerUp to 2 floppy

drives

VM chipset1 CPU (up to 8

CPUswith VMwareVirtual SMP)

1 IDEcontroller

Virtual

machinehardware isscalableenough tomeet most

business andapplicationneeds.


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Centralized Virtual Machine Management

Manage a virtualmachine using itsvirtual machineconsole:

Send power changes

to virtual machine.

Access virtual

machines guest

operating system.

Send Ctrl+Alt+Del to

guest operating

system.

VM console

VMconsole

icon


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Fast, Flexible Guest OS Installations

local

VM console

virtual machine

Install from ISO image to virtual disk.

Configure a datastore with a library of ISOimages for easy virtual machinedeployment and application installation.


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Enhanced Virtual Machine Performance

VMware Tools enhances

performanceand improve managementof a virtual machine.

Features include:

Virtual machine heartbeat

Improved mouse movement

Ability to gracefully shut downvirtual machine

VMwareToolsicon


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Reducing Virtual Machine Deployment Time

A template is a VMware

vCenter Server featureused to create and provisionnew virtual machines.

A template is a masterimage that typicallyincludes a guest operatingsystem, a set of applications,and a specific virtualmachine configuration.


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Creating a Template

Clone virtual machine totemplate.

Virtual machine can either bepowered on or powered off.

Convert virtual machine totemplate.

Virtual machine must be powered

off.

Clone an existing template.

Select template in inventoryfirst.


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Deploying a Virtual Machine from a Template

To deploy a virtual machine from a template, provide such

information as the virtual machine name, inventory location,host, datastore, and guest operating system customizationdata.


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Deploying Virtual Machines Across Datacenters

Virtual machinedeployment is allowed

across datacenters.

For example, deploy

from a template located

in one datacenter to a

virtual machine in a

different datacenter.


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Storage Overview

storagetechnology

datastoretypes

VMwarevStorage

VMFSNFS

LocallyAttached

FibreChannel

iSCSI NAS


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Datastores

A datastore is a logical storageunit that can use disk space on

one physical device or one diskpartition, or span severalphysical devices.

Types of datastores:

VMFS

Network File System (NFS)

Datastores are used to holdvirtual machines, templates, andISO images.

A VMFS datastore can also holda raw device mapping (RDM),which is used to access rawdata.


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VMFS

VMFS:

Allows concurrent access to

shared storage

Can be dynamically expanded

Can use an 8MB block size,

good for storing large virtual

disk files

Uses subblock addressing,

good for storing small files

Provides on-disk, block-level

locking


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RDM

An RDM is a mapping filein a VMFS volume thatacts as a proxy for a rawphysical device.

A raw disk can be usedfor existing data, virtualmachine clustering, andstorage array snapshots.


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More efficient storage utilization:

Virtual disk allocation 140GB

Available datastore capacity 100GB

Used storage capacity 80GB

vStorage Virtual Disk Thin Provisioning

Virtual machine disks consume only

the amount of capacity needed.A virtual machine sees the fullallocated disk size at all times.You can mix thick and thin formats.Full reporting and alerts help manageallocations and capacity.


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Demonstration:

Creating new Virtual Machines

Deploying Templates


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Key Points

A virtual machine is a set of virtual hardware on which a supported guest

operating system and its applications run.

A template is a master image that typically includes a guest operating

system, a set of applications, and a specific virtual machine configuration.

Deploying virtual machines from a template provides a fast, easy, scalable

method for creating virtual machines.

Documents

Creating Virtual Infrastructure Machines