Virtualization is the ability to run virtual machines on top of a hypervisor.Virtualization is an emerging IT paradigm that separates computing functions and technology implementations from physical hardware. Cloud computing, for example, is the virtualization of computer programs through an internet connection rather than installing applications on every office computer. Presented at VTU in Cloud Computing Workshop, 2014

1. Virtualization
-the cloud enabler
Pravin Hanchinal
Co-founder & CEO
INSPIRE- groups

2. presentations

3. How was cloud computing so far?

4. How ahead?

5. What is Virtualization?
Virtualization is the ability to run
virtual machines on top of a hypervisor

6. Virtualization and Cloud Computing
• Virtualization is the ability to run "virtual
machines" on top of a hypervisor
• A hypervisor provides a uniform abstraction
of the underlying physical machine.
• Abstraction in the key idea in Service Models
of Cloud!

7. Timeline of Virtualization
• 1970s: virtual machines first used
• 1990s: x86 becomes prominent server platform
• 1999: VMWare first product to virtualize x86
• 2006: AMD and Intel offer hardware support

8. Benefits of Virtualization
• Greatest Cost Savings
• Highest Server Utilization
• Built-In High Availability
• Zero Downtime Failover
• Best Performance
• Unmatched Reliability
• Superior Security
• Lowest TCO
• Fastest, Easiest Management
* Image source: http://whitehatvirtual.com/blog/bid/334816/Top-5-Benefits-of-Desktop-Virtualization

9. Waste!!!
Imagine a nameserver doing the following:

10. What is a Virtual Machine (VM)?
• A virtual machine (VM) is a software
implementation of a machine that executes
programs like a physical machine.
• Each VM includes its own
kernel, OS, supporting libraries and apps.

11. What VM does?
It just behaves like one - but it is not!

12. Some scenarios
The desktop user who wants to run a copy of
Windows on his Linux computer running
simultaneously

13. Some scenarios
A system architect wanting to run 3 different
server OS on one machine or a cluster

14. Some scenarios
A programmer who wants to test his programs
on a platform the customer is using

15. How to implement VM?
Native/ Bare Metal Hosted

16. VMM / Hypervisor
▪ VMM: Virtual Machine Monitor
▪ Small special purpose operating system
✓ Each process acts like a separate computer or VM
✓ Can run a full OS in each virtual machine

17. Types of hypervisors (VMM)
• Type 1 (or native, bare metal)
– run directly on the host's hardware to
control the hardware and to manage
guest OS.
• Type 2 (or hosted)
– run within a conventional operating
system environment.

18. Types of hypervisors (VMM)

19. How to execute guest instructions
on a host?
Interpretation(emulation)
Slow execution speed, but easy implementation
Translation
Dynamic translation (JIT): translation while running
Static translation (AOT): multiple binary problem
Complicated but faster execution, especially with optimizations
Run directly on the hardware
When the host and guest ISA are binary compatible

20. Types of Virtualization
Server Virtualization
Desktop Virtualization
Application Virtualization
Memory
Data
Storage
Network

21. Server Virtualization

22. How it looks?

23. Server Virtualization -Vendors
VMWare ESX
Citrix XenServer
Microsoft Hyper-V
Red Hat RHEV

24. Desktop Virtualization

25. Desktop Virtualization
VDI (Virtual Desktop Infrastructure)
Session Virtualization
image courtesy

26. Desktop Virtualization -Vendors
Desktop Virtualization - Vendors
Citrix XenDesktop
Citrix VDI-in-a-Box
VMWare view
VM Ware VDI-in-a-Box
Microsoft VDI
Redhat RHEV for Desktops

27. Application Virtualization
App on Demand
No installation,
Easy upgrade
image courtesy

28. Application Virtualization -
Vendors
Citrix XenApp
VMWare ThinApp
Microsoft App-V

29. Pros and Cons of Virtualization
Pros:
Sandbox
Hardware independent
OS independent
Fast Recovery
Live Backup
Migrate data
Reduced Hardware
Run Multiple OS Simultaneously
Cost savings
Use of Multicore processors
System Security
Test and Development
Cons:
Less Efficient
Unstable Performance
Tools lack ability
Rapid Deployment
Latency of Virtual Disk
Backup and Data Sets
Security Issues
Hardware compatibility issues
Managing and Securing is difficult

30. Virtualization: Enterprise Perspective
Reduced cost
–Improve server utilization
–Reduce hardware costs
–Reduce power consumption
Agility
–Operational scalability
–Rapid provisioning
Security
–Isolated Systems

31. Enough! Lets see in Action
Source: http://www.crackerjackann.net/blog/is-a-lack-of-leads-frustrating-you

32. Thank you
more presentation at
inspiregroups.co.in/presentations/

33. Got questions?
mail to askinspire@live.com

34. Stay connected
pravinhanchinal.com

35. What Next?
Go through this presentation again
Explore more
Read Documentations
Experiment

36. Useful Resources
http://inspiregroups.co.in/our-blogs/cloud-computing/
https://www.youtube.com/playlist?list=PLBo_x6sCgJ-HkYWzJSI2XqvHZft5Sc1L4
https://www.youtube.com/watch?v=3j3f5l2La7I
http://www.citrix.com/products/xenserver/overview.html
http://www.zdnet.com/virtualisation-suites-compared-7000001456/
http://wiki.xenproject.org/wiki/Xen_Beginners_Guide