Virtualization is the main underlying technology. (Cloud Computing, Big Data and IoT workshop at Atharva College of Engineering,Mumbai 2016)

1. Virtualization
-the cloud enabler
Pravin Hanchinal
pravinhanchinal.com

2. How I saw Cloud first time?

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. The Cloud Computing Adoption Model

7. 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!

8. 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

9. 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 soruce: http://whitehatvirtual.com/blog/bid/334816/Top-5-Benefits-of-Desktop-Virtualization

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

11. 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.

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

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

14. Some scenarios
A cost controller who wants to substitute 17
idling real machines with a multiprocessor
machine and 17 virtual machines running on it.
(Codenvy / Cloud9 IDE)

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

16. Some scenarios
A programmer who wants to test his programs
on a platform the customer is using.
(Genymotion)

17. What Virtual Machines provide?
– Hardware independence
VM sees the same hardware regardless
of the host hardware
– Isolation
VM’s operating system is isolated from
the host operating system
– Encapsulation
Entire VM encapsulated into a single file

18. Virtual Machines Classification
Process virtual machine
● designed to run a single program, which means
that it supports a single process
● E.g. JVM, Dalvik,..
System virtual machine
● provides a complete system platform which
supports the execution of a complete operating
system (OS)
● E.g. VirtualBox, Parallels Workstation, Xen,..

19. Process Virtual Machine
•

20. System Virtual Machine
•

21. Architecture viewpoint differences
1. Traditional
2. Hosted virtualization
3. Bare-metal virtualization

22. Makes sense?

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

24. 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

25. 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.

26. Type 1 (or native, bare metal)
hypervisor

27. Type 2 (or hosted) hypervisor

28. 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

29. VMotion: Live Migration

30. VMWare Workstation in action

31. Pros and Cons
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

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

33. The Future?

34. Enough! Let's see in Action
Source: http://www.crackerjackann.net/blog/is-a-lack-of-leads-frustrating-you

35. Thank you
more presentations at
http://pravinhanchinal.com/presentations

36. Got questions?

37. Stay connected
pravinhanchinal.com

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

39. Useful Resources
http://inspiregroups.co.in/our-blogs/cloud-computing/
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