VIRTUALIZATION

VMware

Using Virtualization in the Classroom Session Objectives

• Define virtualization• Compare major virtualization programs• Define virtualization terminology• Discuss virtualization benefits• List requirements of virtualization• Demonstrate the use of virtualization(Note that the presentation used at the

conference contains a number of Flash movie demonstrations)

What is Virtualization?• Allows multiple operating systems to run

on the same physical computer at the same time

• A software environment that emulates a computer’s hardware and BIOS

• Virtual machine software creates this environment

Virtual Machine Software• In this presentation, I will discuss:• VMWare Workstation• Microsoft Virtual PC• Microsoft Hyper-V (briefly)

• Other products not discussed• Parallels (Mac) and VMWare Fusion (Mac),

VirtualBox (open source)• In this presentation, I will discuss:• VMWare Workstation• Microsoft Virtual PC• Microsoft Hyper-V (briefly)

• Other products not discussed• Parallels (Mac) and VMWare Fusion (Mac),

VirtualBox (open source)

What Does Virtualization Look Like?

Running Windows 7 in VMWare on a Vista Host

Running Windows 2000 in Microsoft Virtual PC on a Vista Host

Virtualization Terminology• Host machine or host computer

• The computer on which the virtual machine software is installed (Virtual PC or VMWare, e.g.)

• Virtual machine (VM) or Guest OS• The operating system that runs in virtual machine software

on the host computer• Comprised primarily of a configuration file and one or more

virtual hard drive files • Virtual disk• One or more files that reside on the host computer that make

up the VM’s hard disk• Virtual network• The network configuration used by the VM• Options include: bridged, host only, NAT and none• VMs behave like just another computer on the network

Virtualization Terminology (cont’d)• Virtual disk• One or more files that reside on the host computer that

make up the VM’s hard disk• Virtual network• The network configuration used by the VM• Options include: bridged, host only, NAT and none• VMs behave like just another computer on the network

• Snapshot• A partial copy of a VM at a particular moment in time.

Allows you to ‘go back’ to the VM at that particular state. Some programs allow saving multiple snapshots.

Virtualization Benefits• Teach multiple operating systems with a single host

computer• Students can ‘own’ their VM while having minimal access to

the host computer• Multiple VMs can run simultaneously on one host,

networked and all (for example, a client and a server or two servers)

• Easy maintenance and testing• VM won’t boot or got deleted or corrupted? Copy another

one.• Snapshots allow unlimited ‘try this…’ scenarios with a quick

return to the system state before you ‘tried it’.• Run multiple versions of software• Teach Office 2007 while previewing Office 20xx by using two

different VMs.• For programming and database; write an application in one

version and easily test on another version

Virtualization Requirements

•Sufficient RAM on your host computer to accommodate the host OS and the guest OSs you wish to run•Supported host operating system (Windows XP Pro, Vista, Server 2003/2008, Linux)•Sufficient CPU power•Sufficient hard drive space to accommodate the stored VMs

Virtualization Recommendations

•Minimum 1 GB RAM, 2+ GB recommended for Vista and Server 2008 virtual machines•Minimum 3.0 GHz P4, recommended 2.4+ GHz dual-core CPU•Separate hard drive (80 GB+) for the VMs

VMWare

•VMWare was the first serious virtualization software•Around since mid-90s•The leader in server and desktop virtualization

• Free products• VMWare Workstation• VMWare Academic Alliance• VMWare VM on the Host Hard Drive• Microsoft Virtual PC• Windows Server 2008 Hyper-V• Networking with Virtual Machines

Several Vmware Concepts

• Networking Modes• Bridged networking• Network Address Translation (NAT)/Shared Networking• Local/Host only networking• No network connection

• VMWare/Virtual PC ComparisonVMWare Workstation Pros

VMWare Workstation Cons

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