Virtual Machine: A Computer Within Your Computer

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Virtual MachineA Computer Within Your Computer

• Created By Elaine Bryskar

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Have You Ever???

• Wanted to try another operating system?
• Wanted to try evaluation software?
• Wanted not worry about viruses on the Net?

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Have You Ever???

• Wanted to access something on another computer on
  your network?
• Wanted a backup/recovery plan?

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If You Answered Yes

• Dreamer
• Sense of Adventure
• Dont want to spend much money

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Tasks from the PastPC Magazine February 2008

• Overcome Vistas incompatibility with older
  applications
• Such as games
• Run customized software that wont work in
  todays O/Ss

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What Is Virtualization?

• Proven software technology
• Runs multiple operating systems and multiple
  applications on the same computer at the same
  time
• It is not dual-booting
• Can be used by anyone who uses a computer

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What Companies?

• Microsoft
• IBM
• Sun
• HP
• VMWare

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What Is A Server?

• Allows multiple client machines to connect and
  use applications at the same time

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What Is A Virtual Machine?

• Tightly isolated software container that can run
  its own operating system as if it were a physical
  computer
• Behaves exactly like a physical computer
• Contains its own virtual CPU, RAM, hard drive,
  and network interface card (NIC).

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What Is A Virtual Machine?Without A Host O/S
installed
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Virtualization Approach

• VMWare inserts a thin layer of software directly
  on host operating system
• This layer contains a virtual machine monitor
  that allocated resources dynamically
• Allows multiple O/Ss to run concurrently on
  single physical computer

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What Is A Virtual Machine?With a Host O/S
installed
Guest Machines

• CPU. Memory, NIC, Hard Drive

Host Machine
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How Is It Important To Me?

• Runs on any x86-based machine
• Supports 64-bit O/Ss
• Installs like an application, wizard-driven
• Supports any VMWare or Microsoft virtual machine
  format
• Supports multiprocessors

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Why Is It Important To Me?

• Run Windows, Linux, Solaris, Ubuntu on same
  machine
• Increase CPU utilization
• Move virtual machines from one computer to
  another
• A VM is simply a file
• Capture the entire state of a VM and roll back to
  a prior state (Snapshot)

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A Quick Review

• Compatibility
• VMs are compatible with all standard x-86
  machines
• Isolation
• VMs are isolated from each other as if physically
  separated
• Encapsulation
• VMs encapsulate a complete computing environment
• Hardware independence
• VMs run independently of underlying hardware

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A Quick Review

• Encapsulation makes VMs incredibly portable, easy
  to image
• Move and copy a VM image (file) just like any
  other software file
• Save VM to any standard data storage medium
• USB flash drive, another hard drive

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A Quick ReviewHardware Independence

• Configure VM with virtual components different
  from underlying hardware
• Move a VM from one kind of x86 machine to another
  without changing device drivers, OS, applications

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Some SpecificsSoftware

• Windows Operating System
• Windows XP Media Center SP2
• Windows 2000 Server
• Windows Server 2003
• VMWare Server VMs can run
• Windows 3.1 Vista
• Ubuntu
• Linux
• DOS

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Some SpecificsMy Laptop Hardware

• RAM 1.49 GB
• CPU 1.73 MHz
• Hard Drive 111GB
• Allocated
• 512 MB RAM for VM Server with Win2K installed
• 8 GB Hard Drive Space

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My Desktop
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My Desktop
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What Else Is On-Tap

• Browser Appliance add-on
• Protect against viruses, adware, other malware
  with Firefox in a VM. Leverages VM isolation to
  prevent downloaded malware from propagating to
  desktop
• Take a snapshot before browsing and wipe it away
• Its free but other Appliances are not

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Research Information

• VMWare Server and VMWare Player
• Author Dennis Zimmer
• ISBN 783952-291215
• Professional VMWare Server
• Author Eric Hammersley
• ISBN 780470-079881

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Research Information

• www.vmware.com
• register.vmware.com/content/download-106.html
• And, best of all, its FREE!
• Register (by giving an email address) and request
  as many serial numbers as you wish
• www.vmware.com/appliances

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Would You Like a Copy?

• Send me an email at
• computersecure2000_at_yahoo.com
• Place the following in the subject line
• TVCUG VM
• I will attach and forward the following
• 2008 TVCUG Virtual Machine.pps
• This file (1.6MB) can be run without PowerPoint