Sunday, October 9, 2011

Cloud Storage and Security.

Cloud Storage
What?
Also known as utility computing. Its the delivery of computing as a service rather than a product, where shared resources, software and information are provided to computers and other devices as a utility over a network.
It is a convergence of three major trends. 1. Virtualization 2. Utility Computing 3. Software as a service.
Who?
Everyone uses it. Anyone from a small business to a major companies.
 Why?
People use cloud computing for better communication. Using computing features such as email and video conferencing. Also for file sharing and back up which can be expensive to invest in one's own.
How?
Information and software applications stored and ran in data centers all across the world over a fast connection.


       Pros and Cons
    Don’t have to worry about machines running the applications. Some companies had complex requirements. 
    Didn’t approve of data outside of firewall.
    Virtualization
    Applications and infrastructure to became independent. Allows servers to be easily shared by many applications
a  and applications can run anywhere as long as the application is virtualized. Virtualizing applications include
n  packaging the application with everything it needs to run (operating system, middleware, and databases). The
    engine that powers cloud computing is virtualization.
    Cloud turns into a “pay as you go” computing service






Sources:
Diagram

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