A cluster is a type of parallel and distributed system, which consists of a collection of inter-connected stand-alone computers working together as a single integrated computing resource.
A Grid is a type of parallel and distributed system that enables the sharing, selection, and aggregation of geographically distributed ‘autonomous’ resources dynamically at runtime depending on their availability, capability, performance, cost, and users' quality-of-service requirements.
A Cloud is a type of parallel and distributed system consisting of a collection of inter-connected and virtualized computers that are dynamically provisioned and presented as one or more unified computing resources based on service-level agreements established through negotiation between the service provider and consumers.
At a cursory glance, Clouds appear to be a combination of clusters and Grids. However, this is not the case.
Clouds are clearly next-generation data centers with nodes “virtualized” through hyper visor technologies such as VMs, dynamically “provisioned” on demand as a personalized resource collection to meet a specific service-level agreement, which is established through a “negotiation” and accessible as a composable service via Web Service technologies such as SOAP and REST.
1 comment:
Thanks for your informative contents about networking.
Could you specify the applications of the above technologies.
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