© 2009 Wipro Ltd - Confidential
Welcome to ‘The Cloud’
Virtualization and Cloud Computing
Don ReeseSystems Administrator II
Open Systems Migrations
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Agenda
3
4 Pros and Cons
1 Why all the hubbub?
2 What is ‘The Cloud’?
What is ‘Virtualization’?
5 What does it mean?
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Why all the hubbub?
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• The IT industry loves and lives on buzz words and acronyms– SLAs, ROIs, MTBFs, Mbps, the list goes on and on…– So many, some have to be ‘repurposed’
• Business pressure to contain costs– Equipment costs– Power costs– Cooling costs– Real Estate costs– Personnel costs
Why all the hubbub?
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What is ‘The Cloud’?
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• Ten years ago, ‘The Cloud’ = ‘The Internet’– Now: ‘The delivery of computing as a service, rather than a
product’ (Wikipedia)– Grid Computing = Utility, ‘Always On’
• Depends on who’s defining it– External, Internal– SaaS, PaaS, IaaS
• Amazon EC2• Google Docs, Office 365• DropBox, iCloud• FaceBook, Twitter• NOT ‘The Matrix’…yet…
What is ‘The Cloud’?
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What is ‘Virtualization’?
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• Specifically, ‘Hardware Virtualization’• A way to more efficiently use physical compute resources
– Before Virtualization: 10 applications, 10 OS’s, 10 Physical Servers
– After Virtualization: 10 applications, 10 OS’s, 1 Physical Server• Less Power $• Less Cooling $• Less Space $• Less Hardware $
• The Magic is in the ‘Hypervisor’– VMWare ESX– Microsoft HyperV– Citrix XEN
• Originally developed in 1967!
What is ‘Virtualization’?
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Pros and Cons
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• Pros:– Quickly, easily, cheaply scalable– Quickly, easily, cheaply upgradeable– ‘Green’-ish Technology– Disaster Recovery (DR)– Pilot Projects– Short term
• Cons– Where’s your Data?– Who’s got your Data?– What happened to your Data?– The Internet is Down…– More Eggs in One Basket– Anonymous must Die!
Pros and Cons
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What does it mean?
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• You may be using ‘The Cloud’ and not even know it!• ‘Virtualization’ is accelerating
– Expanding into other technology segments
• Information Technology is always changing– Recycle/Reuse/Rename
• Do More with Less• Do it faster• Do it cheaper• But…have a backup plan!
What does it mean?
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