Presentation on Paper from RAD lab at UC at Berkeley. Presentation made for classroom presentation purpose. THIS PRESENTATION IS NOT FROM THE ORIGINAL AUTHORS OF THIS PAPER.

1. Above the Clouds
A Berkeley View of Cloud
Computing

2. Goals of this paper
• Introduce Cloud Computing(CC)
• Clarify the terms
• Provide a formula to make comparisions
on CC and Conventional Computing
• Has answered questions like
– What is CC ?
– How is is different from previous paradigm
such as SaaS ?
– Why CC ?
– What will you need to become a Cloud
Provider ?
– What are the Obstacles in CC ?

3. Cloud Compuitng
• Old Concept
• Long held dream has been emerged as a
Commercial reality
• Something analogous to Semiconductor
fabrication line in Hardware industry
• Confusing Term

4. Some terms in CC.
• Cloud: The datacenter hardware and
software is what we call cloud.
• Public Cloud : Cloud made aviliable in a
pay-as-you-go manner.
• Private Cloud : Referred to the internal
datacenters of a business or other
organiations that are not made aviliable to
the public.

5. What is CC ?
• CC is referrred to both the application
delivered as a service over the internet
and the hardware and systems softwares
in the datacenters that provide service.
• CC is something that allows deploying
SaaS without building datacenter, it also
allows scaling on demand.

6. Whats new in CC ?
• Give illusion that we have infinite amount
of hardware resources.
• Allow to start small and increase the
resources as the demand goes higher.
• Pay only for what you use.

7. Why Cloud Computing ??
• Elasticity

8. Why Cloud Computing ?
• Computer technologies are getting cheaper
– BUT are we enjoying this with our traditional
technologies ?

9. How to decide to go for CC ?
• Calculate the following
– For CC
– For Normal Computing
• Go for the greater one
• Suppose, left side is greater so go for CC

10. Contd...
• Ensure for time too, not only for price
– Could have been done at cheaper price but time
constraints may not permit us to do.

11. Who will be the CC provider and
WHY ?
• WHO ??
– Company with large datacenters and also a large
scale software infrastructure and operational
expertise to run them.
• WHY ??
– Lucerative Business
– Services in cheaper price
• BUT how ?
– Keep your data center in countryside so that the taxes and
electricity is cheaper
– PHYSICS says "Its easier to ship photones than electrones"
» Cheaper to ship electricity than to ship data

12. Contd...

13. Why Now, Why Not Then ?
• No need then...
• So.. Why now ??
– New Technology Trend and Business Model
• Paypal
– New Application Opportunities
• Mobile Interactive application
• Parallel Batch Processing etc

14. Obstacles in CC
• Avaliablility of a service
• Data Lock-In
• Data Confidentiality
• Data Transfer Bottlnecks
• Performance Unpredictability
• Scalable Storage
• Bugs in Large Scale Distributed Systems
• Scaling Quickly
• Reputation Fate Sharing
• Software Liscensing

15. Obstacles-1
• Aviliability of a Service
– Will our data and service be aviliable 24/7 ?
– This outwage might cost CC to loose its active and
possible customers.
– Distributed Denial of Service(DDoS) attack

16. Obstacles-2
• Data Lock-In
– Customer loose acces to their data
– Linkup ,online storage service, shutdown on
2008 after loosing 45% of customer data
– Solutions
• Dont go for the cheapest one
• Standerize the API so that a Saas Developer can
deploy service and data across multiple cloud.

17. Obstacles-3
• Data Confidentiality and Auditability
– "My sesitive data will never be in cloud"
– Corporates might not like other country to
access their data
– Encrypting data before placing it in the cloud.
– Still the user might not know the laws of the
country where their data is located.
– Amazon provides s3 services in two locations
• Europe and United States
• Users can choose any location they want

18. Obstacle-4
• Data Transfer Bottlenecks
– Need to transfer data of 10TB from ktm to pkh
•Send via network
– Might require 4,000,000
seconds over 20MB/s
transfer rate
– Its more than 45 days
– Apart from time transfer
charge is also present
•Ship 10 TB data storage
device
– Can be sent in 1 day time
– Cheaper than transferring
data via network

19. Future of Cloud Computing
• New architecture of software for CC
• Infrastructure Software
• Hardware Systems

20. THANK YOU