||Oracle Tips by Burleson
Chapter 2 Grid, Utility
Computing and Clusters
While the base of the model conveys the
different underlying technologies, the top of model shows high-level
behaviors that translate into services and user applications.
The ‘fabric’ layer provides the
resources to which the shared access is controlled by the grid
protocols. The resources normally include physical and logical
entities. Physical entities are resources like storage systems,
catalogs, servers and network resources. The resource may be a
logical entity like distributed file system, computer cluster or
distributed computer pool and database systems to store structured
data. The Grid mechanism normally permits the capability for the
resource management, which involves discovery and control.
The ‘connectivity’ layer defines core
communications and authentication protocols required for Grid
specific network transactions. These protocols enable the exchange
of data between fabric layer resources. The ‘resource’ layer, based
on the connectivity and authentication protocols, controls the
services” layer deals with the directory brokering services,
scheduling services, data replications services and
diagnostics/monitoring services. These services are not associated
with any one specific resource but focus on interactions across
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