A GRID is a hardware and software infrastructure that provides a flexible, secure, coordinated resource sharing among dynamic collection of virtual organizations.
Coined as tomorrow's supercomputer, the World Wide Web has provided an infrastructure on how the information can be shared globally. Clusters of geographically dispersed servers can now be treated as a single pool of computing resources that can be allocated and reallocated as needed!
Just as the Web changes the way we communicate with each other, Grid will change the way we access to the computation and storage resources as well. Great strides in storage technology made over the past few years like NAS (network-attached storage) and SANs (storage area networks) make it ever easier to view and maximise use of all storage resources in an IT infrastructure.
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