The document discusses the evolution of computing, covering topics such as mainframes, client-server computing, and cloud computing. It highlights the benefits and challenges of cloud services, including reduced costs and increased security vulnerabilities. Additionally, it provides an overview of data center technologies and common components that support virtualized IT resources.

1. Name:Hemanth SR
Application Number :b7a1694ce66f11e993536ba76d9d9d0c
Affiliation:Associate Professor
Dept of CSE,MITMYSORE
Email: sr.hemanth@gmail.com
Acknowledgement: Academic Writing Course
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2. Evolution of computing
Main frames
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3. Client ServerComputing
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4. Distributed Computing
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5. Grid Computing
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6. Cloud Computing
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7. Look to thecloud!
Payfor the bandwidth and
server resources that youneed.
When your work is done then
turn the whole thingoff!
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8. Cloud Symbol
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9. ITResources
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10. Cloud Service
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11. CloudTerminologies
• Data center
• Servicelevel agreement(SLA)
• Serviceprovider
• Utility computing
• Middleware
• Cloud ware
• On-Premise
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12. Data Center
Google data center

13. Facebook data center
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14. Amazon Data Center
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15. Cloud Characteristics
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16. Typesof services
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17. Infrastructure-as-a-Service (IaaS)
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18. Platform-as-a-Service (PaaS)
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19. Software-as-a-Service (SaaS)
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20. Combining Cloud Delivery Models
IaaS +PaaS
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21. IaaS +PaaS +SaaS
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22. Service from Different Vendors
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24. Cloud Deployment Models
1. PublicCloud
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25. 2 . Privatecloud
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26. 3. Hybrid Cloud
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27. Benefits of cloud
1. ReducedInvestments and Proportional
Costs
– On-demand accessto pay-as-you-go computing
– reducing the need to prepare forprovisioning.
2. IncreasedAvailability andReliability
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28. 3. Scaling
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29. Risksand challenges
• Increased Security Vulnerabilities
• ReducedOperational Governance Control
• Limited Portability Between CloudProviders
• Multi-Regional Regulatory and LegalIssues
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30. Risksand challenges
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31. Risksand challenges
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32. Technologies in DataCenter
1.Virtual Machines
• VM technology allows multiple virtual
machines to run on asingle physicalmachine.
Hardware
Virtual Machine Monitor (VMM) / Hypervisor
GuestOS
(Linux)
GuestOS
(NetBSD)
GuestOS
(Windows)
VM VM VM
AppApp AppAppApp
Xen
VMWare
UML
Denali
etc.
Performance: Para-virtualization (e.g. Xen)is very close to raw physical performance!
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33. The common components of a data center working together to
provide virtualized ITresources supported by physical ITresources
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34. 2.Automation
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35. 3.Remote Operation andManagement
4.HighAvailability
Data centers usually have redundant, uninterruptable power supplies,
cabling, and environmental control subsystems in anticipation of system
failure.
5.Computing Hardware
• rack mount form factor server design composed of standardizedrackswith
interconnects for power, network, and internalcooling
• support for different hardware processingarchitectures, suchasx86-
32bits, x86-64, andRISC
• apower-efficient multi-core CPUarchitecture that houseshundreds of
processingcoresin aspaceassmall asasingle unit of standardized racks
• redundant and swappable components, suchashard disks, power
supplies, network interfaces, and storage controllercards
6.Storage Hardware
Hard DiskArrays ,StorageArea Network (SAN)
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