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Cloud Computing
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Cloud Computing
It refers to the sourcing of some capability.
A cloud computing platform dynamicallyprovisions, configures, reconfigures, and
deprovisions servers as needed. It requires the use of software and is a way to
increase capacity or add capabilities on the flywithout investment.
It gives a new dimension to online computing. Cloud computing service is a necessity.
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Cloud Computing Working
Cloud computing aims to apply akind of power in a way that userscan tap through the Web.
It networks large groups of servers.
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Architecture
The architecture behind cloudcomputing is a massive network.
The cloud computing infrastructureconsists of reliable services.
The Cloud appears as a single point ofaccess for all the computing needs ofconsumers.
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Clouds of different colors
Example :
Blue Cloud is supported by IBMTivoli software that managesservers to ensure optimal
performance based on demand.
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Cloud Computing -Categories
Hardware cloud : It allows us to use its hardwareservers,storage,network to run our enterpriseapplications store our data ,etc.Eg.Amazons Elastic computer cloud.
Software cloud : Here the provider manages thehardware and software capacity needed tosupport the required number of seats and servicelevel we want. Eg.Salesforce.com
Desktop cloud : This runs the desktop
applications such as word processing orspreadsheets from a hardware cloud through theinternet. Eg.Google Docs.
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Cloud Computing -Networks
Also referred to as a network cloud.
A standard protocol suite such asFrame Relay is used to transmit thedata which enters the network cloud.
The data emerges from the cloud --where it may be encapsulated,translated and transported in myriadways.
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Security
It is the single biggest issue formost companies.
It is built into the DNA of the
products by physical protection ofdata centers, measures to preventnet work attacks and proceduresfor deploying secure code
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Performance
Its not fast enough to handle largetransaction if the applications haveto access their databases through
the Internet. To solve the performance problem,
another type of clouda fullecosystem of enterprise SaaS plusdatabase as a service, all within asingle hardware cloud.
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Advantages of the Cloud
A prescripted and abstractedinfrastructure.
Fully virtualized.
Equipped with dynamic infrastructuresoftware.
Pay by use.
Free of long term contracts.
Application and OS independent. Free of software and hardware
installation.
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Conclusion
Three issueswhere dataresides, the security of software and
data against malicious attacks, andperformance requirementsmaywell determine the direction in whichcloud computing evolves and its verysuccess.
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