• https://www.youtube.com/watch?v=cSp1dM2Vj48

VIRTUALIZATION
PREPARED BY:
FLORIDEL C. PELIN
ICT Teacher

OBJECTIVES:
•Define Virtualization
•Describe virtualization software
•Plan for OS installation using the virtual Machine
•Appreciate the benefits of Virtualization in real world.

WHAT IS VIRTUALIZATION?
Operating System
App. A App. B App. C App. D
Hardware
‘Nonvirtualized’ system
A single OS controls all hardware
platform resources
Virtualized system
It makes it possible to run multiple Virtual
Containers on a single physical platform
Virtualization is a broad term (virtual memory, storage, network, etc)
- basically allows one computer to do the job of multiple computers, by
sharing the resources of a single hardware across multiple environments
Virtualization Layer
Virtual
Container
Hardware
Virtual
Container
App. A App. B App. C App. D

BRIEF HISTORY OF VIRTUALIZATION
• The concept of virtualization is generally believed to have its
origins in the mainframe days in the late 1960s and early 1970s,
when IBM invested a lot of time and effort in developing robust
time-sharing solutions.
• Time-sharing refers to the shared usage of computer resources
among a large group of users, aiming to increase the efficiency
of both the users and the expensive computer resources they
share.

• This model represented a major breakthrough in computer
technology: the cost of providing computing capability
dropped considerably and it became possible for
organizations, and even individuals, to use a computer
without actually owning one.
• Similar reasons are driving virtualization for industry
standard computing today: the capacity in a single server is
so large that it is almost impossible for most workloads to
effectively use it. The best way to improve resource
utilization, and at the same time simplify data center
management, is through virtualization.
BRIEF HISTORY OF
VIRTUALIZATION

ADVANTAGES AND DISADVANTAGES OF
VIRTUALIZATION
• Main Advantages:
• Less hardware is needed (easy
maintaining and reduced costs)
• High flexibility when the infrastructure is
under construction due to fast provision
of ne VMs
• Easy maintaining of the reduced
hardware
Disadvantages:
• Less performance, usually
overhead of 5 to 10
percent
• Failure of one server
concludes the shutdown
of all VM’s running on it

•It allows a single host computer to create and
run one or more virtual environments.
•It is most often used to emulate a
complete computer system in order to allow
a guest operating system to be run.
VIRTUALIZATION SOFTWARE

WHAT ARE VIRTUAL MACHINES?
•A virtual computer system is known as a “virtual
machine” (VM): a tightly isolated software container
with an operating system and application inside.

KEY PROPERTIES OF VIRTUAL
MACHINES

PARTITIONING
•Run multiple operating systems on one
physical machine
•Divide system resources between virtual
machines

ISOLATION
•Provide fault and security isolation at the
hardware level
•Preserve performance with advanced
resource controls

ENCAPSULATION
•Save the entire state of a virtual machine
to files
•Move and copy virtual machines as easily
as moving and copying files

HARDWARE INDEPENDENCE
•Provision or migrate any virtual machine
to any physical server

HOW VIRTUALIZATION WORKS

TYPES OF VIRTUALIZATIONS
•Server Virtualization
•enables multiple operating systems to run on a single
physical server as highly efficient virtual machines.

TYPES OF VIRTUALIZATIONS
•Network Virtualization
Network virtualization is the complete reproduction of a
physical network in software. Applications run on the virtual
network exactly the same as if on a physical network. Network
virtualization presents logical networking devices and
services—logical ports, switches, routers, firewalls, load
balancers, VPNs and more—to connected workloads. Virtual
networks offer the same features and guarantees of a physical
network with the operational benefits and hardware
independence of virtualization.

TYPES OF VIRTUALIZATIONS
•Desktop Virtualization
• Deploying desktops as a managed service gives you the
opportunity to respond quicker to changing needs and
opportunities.

DIFFERENT VIRTUAL MACHINES USED
IN VIRTUALIZATION
•VirtualBox (Windows, Linux, Mac OS X)
It is very popular because it’s open-source and
completely free. There’s no paid version of VirtualBox.

DIFFERENT VIRTUAL MACHINES USED
IN VIRTUALIZATION
• VMware Player (Windows, Linux): VMware has their own
line of virtual machine programs. You can use VMware
Player on Windows or Linux as a free, basic virtual machine
tool.
• More advanced features — many of which are found in
VirtualBox for free — require upgrading to the paid VMware
Workstation program. We recommend starting out with
VirtualBox, but if it doesn’t work properly you may want to
try VMware Player.

DIFFERENT VIRTUAL MACHINES USED
IN VIRTUALIZATION
•VMware Fusion (Mac OS X): Mac users
will need to buy VMware Fusion to use a
VMware product, as the free VMware
Player isn’t available on a Mac.

DIFFERENT VIRTUAL MACHINES USED
IN VIRTUALIZATION
•Parallels Desktop (Mac OS X): Macs also have
Parallels Desktop available. Both Parallels Desktop
and VMware Fusion for Mac are more polished than
the virtual machine programs on other platforms —
they’re marketed to average Mac users who might
want to run Windows software.

HOW DOES ONE USE VIRTUAL
MACHINES?

BENEFITS OF VIRTUALIZATION
•Virtualization can increase IT agility, flexibility,
and scalability while creating significant cost
savings. Workloads get deployed faster,
performance and availability increases and
operations become automated, resulting in IT
that's simpler to manage and less costly to own
and operate.

•Reduce capital and operating costs.
•Minimize or eliminate downtime.
•Provision applications and resources faster.
•Enable business continuity and disaster recovery.
•Simplify data center management.
•Build a true Software-Defined Data Center.
Additional benefits include:

BENEFITS OF VIRTUALIZATION

Questions?

TASK
SHEET:
Procedure:
• By Group: Divide the class into 2
groups
• Install Virtual Box in your PC
• Group 1: Install Win 7 using the virtual
Box
• Group 2: Install Win 8
• Group 3: Install Win 10
• Group 4: Install Server 8 R2
Assessment Method:

CRITERIA:
Activity:
Students will :
 Install Virtual Box
 Install the OS Assigned to the Group
 Observe OHS
Content
Poor
15 pts
Fair
25 pts
Good
35 pts
Very Good
50 pts
Score
Install Virtual Box
25 %
Student was unable
to successfully
install the
appropriate Virtual
Box within the
standard time.
Student was able to
successfully install
the appropriate
Virtual Box on the PC
with close guidance
and assistance.
Student was able to
successfully install the
appropriate Operating
System, with very little
supervision and guidance.
Student was able to
successfully install the
appropriate Operating
System, without
supervision and
guidance within the
standard time.
Install Operating
System
25 % Win 7
Student was unable
to successfully
install the
appropriate
Operating System
within the standard
time.
Student was able to
successfully install
the appropriate
Operating System on
the PC with close
guidance and
assistance.
Student was able to
successfully install the
appropriate Operating
System, with very little
supervision and guidance.
Student was able to
successfully install the
appropriate Operating
System, without
supervision and
guidance within the
standard time.
10% Occupational
Health and Safety
Learners was
unable to apply
OHS.
Learners was able to
apply OHS with full
supervision.
Learners was able to
apply OHS with less
supervision.
Learners was able to
apply OHS without
supervision.

VIRTUAL PC HARDWARE REQUIREMENTS

•Microsoft Office under Windows 7 on the same physical
machine. Virtual PC is a Windows 7-only application. If
your PC can run Windows 7 well, it probably meets the
minimum hardware requirements needed to use Virtual
PC.
•Virtual PC can run on any 32-bit or 64-bit, x86-compatible
CPU.
•1-GHz or faster CPU.
•on-board video or graphics card support for DirectX 9 and
Windows Display Driver Model 1.0.

• System RAM at least 2GB of RAM to run Virtual PC
• Hard Disk Space Virtual PC needs just 20MB of hard disk
space to install and use
• Input/Output Devices
• CD-ROM or DVD-ROM drive to install supported Windows
guest operating systems. Linux-based guests, however, can
be created using ISO images written to optical disks,
bootable USB flash drives or ISO files saved on the host's
hard drive. In addition, you may need a wired Ethernet or
wireless adapter to complete your guest system’s
installation or for system updates.

ADVANTAGES/DISADVANTAGES OF
VIRTUALIZATION

• https://www.tutorialspoint.com/virtualization2.0/virtualization2.0_comm
on_uses.htm

HOW IS IT DIFFERENT FROM OTHER
SYSTEMS?
•With virtualization, you can instantly access nearly
limitless computing resources which allow for faster
and broader business capabilities. It also gets rid of
haphazard IT rooms, cables, and bulky hardware;
reducing your overall IT overhead as well as
management costs.

•When to virtualize?
• Virtualize if you rely on technology – Companies that rely on
technology often use several servers and technology from
hardware like laptops and networks. Basically, if your company
needs technology to operate, virtualization can help you reduce
the overall operation costs.
• Virtualize if your company exceeds 20 employees – Many tech
experts agree that there is no need for virtualization if you have a
business with less than 10-20 employees. With that number,
traditional servers are usually more than enough to cater to your
needs.

• Virtualize if you can cover the costs – While virtualization is meant
to reduce costs, like any modern technology it requires an initial
investment. The cost of virtualization can be high for smaller
businesses to implement, however you do have an option of working
with an IT partner like us. We can help you realize cost-savings or
even a Return On Investment (ROI). For companies with servers in
place, virtualization can be as simple as installing a free program.
• Virtualize if you want space – Certain business operators throw
away a big chunk of their money on an extra room to house large
server racks, wires or even IT personnel to maintain them. The issue
here is the cost of maintenance, as well as limited office space. In this
situation, virtualization can help make better use of space while
reducing hardware costs.

Virtualization Companies
• Citrix (www.citrix.com)
• Pano Logic (www.panologic.com)
• Parallels (www.parallels.com)
• VirtualLogix (www.virtuallogix.com)
• Solarflare Communications (www.solarflare.com)
• VMware: Q1 Sales Increase by 69% ...
• Attune Systems Announces Maestro
• File Virtualization Solution
• Virtual Network Intelligence 3.5 Unveiled.