This document discusses virtualization technology and provides details about different types of virtualization. It states that virtualization allows running multiple virtual systems and operating systems on a single physical server to improve efficiency. It then covers various types of virtualization in depth, including hardware, application, server, network, desktop and storage virtualization. It also defines hypervisors and the role they play in enabling virtualization. Common hypervisor types and examples of virtualization platforms are provided.

1. VIRTUALIZATION TECHNOLOGY

2. PRESENTATION OUTLINE
• BACKGROUND
• PROBLEM STATEMENT
• VIRTUALIZATION
WHAT IT IS
WHY ESSENCIAL
TYPES
HYPERVISOR
• VMWARE

3. BACKGROUND
EVERY ENTERPRISE CONTAINS SIMPLE SERVERS AS FOLLOWING

4. BACKGROUND
LARGE ENTERPRISES CONTAINS HUGE AMOUNT OF SERVERS

5. PROBLEM STATEMENT
LOW UTILIZATION METRICS IN SERVERS ACROSS THE ORGANIZATION

6. PROBLEM STATEMENT
• NEED HIGH COST & INFRASTRUCTURE
 FLOOR SPACE
 NETWORKING
 POWER
 COOLING
 MAINTENANCE
 DISASTER RECOVERY

7. SOLUTION
VIRTUALIZATION

8. WHAT VIRTUALIZATION IS
VIRTUALIZATION IS TECHNOLOGY THAT LETS YOU CREATE USEFUL IT SERVICES USING
RESOURCES THAT ARE TRADITIONALLY BOUND TO HARDWARE.
THIS ENABLES IT ORGANIZATIONS TO RUN MORE THAN ONE VIRTUAL SYSTEM – AND
MULTIPLE OPERATING SYSTEMS AND APPLICATIONS – ON A SINGLE SERVER. THE
RESULTING BENEFITS INCLUDE ECONOMIES OF SCALE AND GREATER EFFICIENCY.

9. ITS ADVANTAGE
• SINCE VIRTUALIZATION IS ALWAYS APPLIED IN EXISTING PARTS OF THE SYSTEM, BETTER EFFICIENCY AND PERFORMANCE IS ALWAYS GUARANTEED BY THE VIRTUAL MACHINES. THIS
HELPS THE SYSTEM TO STORE AND PERFORM WITH THE DATA IN THE SYSTEM.
• VIRTUAL MACHINES ARE NOT PLACED TOGETHER. THEY ARE LOGICALLY SEPARATED SO THAT A MALWARE ATTACK ON ONE VM WILL NOT AFFECT THE OTHER VM.
• SINCE HARDWARE VIRTUALIZATION IS CARRIED OUT, WE NEED TO PURCHASE LESS HARDWARE FOR SYSTEM USAGE. THIS HELPS TO TACKLE THE COST OF HARDWARE. ONLY THE
STORAGE HAS TO BE EXPANDED. THE SPACE REQUIRED WILL BE LESS IF THE STORAGE IS PROPERLY MANAGED BY THE RESOURCES.
• VIRTUAL MACHINES HAVE A BETTER BACKUP THAN PHYSICAL MACHINES. THIS SHOWS THE RELIABILITY OF VIRTUALIZATION. ALSO, IT RECOVERS THE FILE FASTER AND IT HAS GOOD
RETRIEVAL CAPABILITY.
• VIRTUAL MACHINES ARE EASILY MANAGED BY THIRD-PARTY PROVIDERS AND HENCE THE COST CAN BE KNOWN BEFOREHAND. THIS HELPS TO MANAGE THE COSTS OF THE
INFRASTRUCTURE AND CREATE PLANS ACCORDINGLY.
• SERVICE PROVIDERS HELP WITH THE SOFTWARE BY AUTOMATICALLY UPDATING THE SOFTWARE WHENEVER NEEDED. THIS SAVES TIME AND ALSO THE RESOURCES CAN FOCUS ON
OTHER WORK RATHER THAN CHECKING THE VMS.
• THE PERFORMANCE AND THE UPTIME ARE INCREASED WITH THE USAGE OF VMS. EVEN THE CHEAP SERVICE PROVIDERS OFFER UPTIME OF 99%.
• RESOURCES ARE ALLOCATED FASTER THAN PHYSICAL MACHINES. SINCE THE DEPLOYMENT IS FASTER, IT SAVES TIME AND VMS ARE SPREAD THROUGHOUT THE ORGANIZATION FOR
WHICH RESOURCES ARE SORTED OUT EASILY.
• USERS CAN BECOME DIGITAL ENTREPRENEURS EASILY WITH THE HELP OF DIGITAL SERVERS AND STORAGE DEVICES AVAILABLE TODAY. THE WORK CAN BE MANAGED, DEVELOPED
AND DIVIDED ONLINE WITH THE HELP OF VIRTUALIZATION. THERE ARE MANY SITES WORKING WITH VIRTUALIZATION AND ANYONE CAN FIND WORK IN THOSE SITES WITH THE
KNOWLEDGE OF THE APPLICATION USED IN THE SITES.
• IT HELPS TO SAVE ENERGY AS THE NUMBER OF PHYSICAL SOFTWARE AND HARDWARE USED CAN BE REDUCED DUE TO VIRTUALIZATION. LOCAL HARDWARE IS NOT ALLOCATED AND
THERE IS LESS NEED FOR THE SAME. THIS HELPS TO MANAGE THE FUNDS EFFICIENTLY FOR OTHER PURPOSES. CONSUMPTION RATES ARE REDUCED AND DATA CENTERS NEED NOT
BE USED FOR THE ORGANIZATION. THE CARBON FOOTPRINT IS REDUCED AND IT GIVES PEACE OF MIND OF CONTRIBUTING LESS POLLUTION.
• VIRTUALIZATION MAKES THE SYSTEM SCALABLE DEPENDING ON THE NEED OF THE USER AND THE STORAGE CAPACITY IS MORE THAN ANY PHYSICAL SYSTEM. THIS SCALABILITY
HELPS TO USE MANY APPLICATIONS AND ALLOCATION OF RESOURCES FOR THE SAME. ALSO, THIS HELPS TO USE THE SYSTEM WITH THE STORAGE CAPACITY OF TWO SYSTEMS AND
HENCE THE AVAILABILITY OF ONE SYSTEM CAN BE REDUCED.
• SERVERS RUN VERY FAST IN THE SYSTEM WHEN COMPARED WITH PHYSICAL SERVERS. WE NEED NOT WAIT FOR ANY INSTALLATIONS OR UPDATES TO COMPLETE AS IN VIRTUAL
MACHINES, THESE THINGS ARE DONE BY SERVICE PROVIDERS. ALSO, THERE ARE VIRTUAL BACKUP TOOLS.

10. COST REDUCTION
• REDUCING THE OVERHEAD OF PHYSICAL SERVERS
• SOFTWARE AND LICENSING COSTS
• ELECTRICAL COSTS
• DECREASED TIME FOR SERVER PROVISIONING AND
DEPLOYMENT

11. TYPES OF VIRTUALIZATION

12. HARDWARE VIRTUALIZATION
The basic idea to enable hardware virtualization is to integrate numerous small
physical servers into a single large physical server for the processor to be used
effectively. The Operating System that runs on the physical server is converted into
an OS that runs inside the virtual machine.
Types of Hardware Virtualization
Hardware assisted virtualization has three kinds. These include:
•Full Virtualization: The hardware architecture is fully simulated. No modification is required
by guest software for running applications
•Para-Virtualization: The hardware is not simulated, rather the guest software runs the
isolated system
•Emulation Virtualization: In emulation virtualization, the virtual machine is independent. It
simulates the hardware and there is no modification required by the guest operating system.

13. APPLICATION VIRTUALIZATION
Application virtualization hosts individual applications in which a virtual
environment is entirely separate from the underlying operating system (OS).
Application virtualization makes it possible to encapsulate all the elements of any
particular application and run them independently from the underlying OS.
It means that the machine that is running the application does not have that
application installed. It resides on a (virtual machine) VM in a remotely located
server.
Some of the top platforms that specialize in application virtualization software
are:
•Citrix Virtual Apps and Desktops
•Microsoft App-V
•Parallels Remote Application Server (RAS)

14. SERVER VIRTUALIZATION
Server Virtualization, also known as hardware-based virtualization, divides a physical
server into multiple virtual servers that run guest operating systems independently.
Server virtualization software reduces the need for multiple physical servers and requires
a lesser amount of hardware. Thus, it’s a highly effective cost reduction technology.
There are three primary types of server virtualization’ Full Virtualization, Para-
virtualization, OS virtualization.
The top three server virtualization platforms include:
•IBM PowerVM
•Nutanix AOS
•Proxmox VE

15. NETWORK VIRTUALIZATION
In network virtualization, all physical networking tools and other resources are
integrated into one software-based resource. It further breaks the bandwidth into
multiple channels, independent of one another.
A network virtualization software creates a tunnel through the existing network. This
way, the admins can run VMs without the need for individual network reconfiguration.
The bandwidth division thus allows users to assign the channels to multiple systems in
real-time.
Three of the best network virtualization tools include:
•6WIND Virtual Accelerator
•Cisco Nexus Virtual Services Appliance
•JunosV App Engine

16. DESKTOP VIRTUALIZATION
The desktop Virtualization approach is also known as a client-server computing
model. It stores any desktop environment virtually on a centralized remote server.
Desktop virtualization software helps with workstation load and offers; smooth
employee onboarding, redundant process removal, disaster recovery, single interface
customization, and more.
Top desktop virtualization software platforms include:
•Amazon WorkSpaces
•Citrix XenDesktop
•VMware Workstation and VMware Fusion

17. STORAGE VIRTUALIZATION
Storage virtualization performs resource abstraction in a way that the multiple
physical storage arrays are virtualized as a single storage pool with direct and
independent access.
The storage virtualization software aggregates and manages storage in various
storage arrays and serves it to applications whenever needed.
The centralized virtual storage increases flexibility and availability of resources
needed. This data virtualization and centralization is easily manageable from a
central console. It allows users to manage and access multiple arrays as a single
storage unit.
Top storage virtualization platforms include:
•FalconStor Network Storage Server
•IBM Storage Virtualization
•QUADStor Systems

18. HYPERVISOR
A hypervisor is a crucial piece of software that makes virtualization
possible. It abstracts guest machines and the operating system they run
on, from the actual hardware.
Hypervisors create a virtualization layer that separates CPU/Processors,
RAM and other physical resources from the virtual machines you create.
The machine we install a hypervisor on is called a host machine,
versus guest virtual machines that run on top of them.
Hypervisors emulate available resources so that guest machines can use
them. No matter what operating system you boot up with a virtual
machine, it will think that actual physical hardware is at its disposal.

19. TYPE OF HYPERVISOR
• TYPE 1 HYPERVISOR (ALSO CALLED BARE METAL OR
NATIVE)
VENDORS:
1. VMWARE VSPHERE WITH ESX/ESXI
2. KVM (KERNEL-BASED VIRTUAL MACHINE)
3. MICROSOFT HYPER-V
4. ORACLE VM
5. CITRIX HYPERVISOR (FORMERLY KNOWN AS XEN SERVER)
• TYPE 2 HYPERVISOR (ALSO KNOWN AS HOSTED
HYPERVISORS)
1. ORACLE VM VIRTUALBOX
2. VMWARE WORKSTATION PRO/VMWARE FUSION
3. WINDOWS VIRTUAL PC
4. PARALLELS DESKTOP

20. ARCHITECTURAL DIFFERENCE

21. TECHNICAL DIFFERENCE

22. PARA-VIRTUALIZATION
IT IS BASED ON HYPERVISOR. MUCH OF THE
EMULATION AND TRAPPING OVERHEAD IN SOFTWARE
IMPLEMENTED VIRTUALIZATION IS HANDLED IN THIS
MODEL. THE GUEST OPERATING SYSTEM IS MODIFIED
AND RECOMPILED BEFORE INSTALLATION INTO THE
VIRTUAL MACHINE.
DUE TO THE MODIFICATION IN THE GUEST OPERATING
SYSTEM, PERFORMANCE IS ENHANCED AS THE
MODIFIED GUEST OPERATING SYSTEM COMMUNICATES
DIRECTLY WITH THE HYPERVISOR AND EMULATION
OVERHEAD IS REMOVED.

23. OS LEVEL VIRTUALIZATION
• OPERATING SYSTEM VIRTUALIZATIONS INCLUDES A
MODIFIED FORM THAN A NORMAL OPERATING
SYSTEM SO THAT DIFFERENT USERS CAN OPERATE ITS
END USE DIFFERENT APPLICATIONS. THIS WHOLE
PROCESS SHALL PERFORM ON A SINGLE COMPUTER
AT A TIME.
• IN OS VIRTUALIZATIONS, THE VIRTUAL EYES
ENVIRONMENT ACCEPTS COMMAND FROM ANY OF
THE USER OPERATING IT AND PERFORMS DIFFERENT
TASK ON THE SAME MACHINE BY RUNNING
DIFFERENT APPLICATIONS.
• IN OPERATING SYSTEM VIRTUALIZATIONS WHEN THE
APPLICATION DOES NOT INTERFERE WITH ANOTHER
ONE EVEN THOUGH THEY ARE FUNCTIONING IN THE
SAME COMPUTER.

24. MIGRATION TO THE CLOUD BECOMES EASIER
IF THERE IS ONE IT TREND THAT IS ECLIPSING VIRTUALIZATION, IT
IS THE CLOUD. IT IS EASIER TO MIGRATE A COLLECTION OF
VIRTUAL ENVIRONMENTS TO A CLOUD-BASED PROVIDER THAN
TRYING TO MANAGE THE SAME PROCESS WITH PHYSICAL
HARDWARE. THIS MIGRATION CAN ALSO BE TO A PRIVATE CLOUD,
OFFERING THE SAME BENEFITS IN SECURE BACKUP AND MOBILITY,
WHILE RETAINING A MEASURE OF SECURITY AND ACCESS
CONTROL COMPARED TO A PUBLIC CLOUD SERVICE.

25. CHALLENGES
BAD STORAGE, SERVER, AND NETWORK CONFIGURATIONS ARE JUST A FEW REASONS WHY
VIRTUALIZATION FAILS. THESE ARE TECHNICAL IN NATURE AND ARE OFTEN EASY TO FIX, BUT SOME
ORGANIZATIONS OVERLOOK THE NEED TO PROTECT THEIR ENTIRE VIRTUALIZED ENVIRONMENTS,
THINKING THAT THEY’RE INHERENTLY MORE SECURE THAN TRADITIONAL IT ENVIRONMENTS.
1. Resource distribution
2. VM Sprawl
3. Backward compatibility
4. Performance monitoring
5. Backup
6. Security

26. CONCLUSION
• VIRTUAL DESKTOPS WILL BECOME MORE POWERFUL AND MANAGEABLE AND
DATA CENTERS WILL BECOME EVEN MORE FLEXIBLE AS EVERY LAYER OF THE
COMPUTING STACK BECOMES VIRTUALIZED.
• THE POWER OF VIRTUALIZATION PROVIDES SUBSTANTIALLY MORE BUSINESS
VALUE THAN JUST SERVER CONSOLIDATION.

27. THANK YOU