Information Technology Reference
In-Depth Information
Storage Confi guration
As enterprise networks become more extensive and well integrated, storage
policies must address this evolution to gain increased economies of scale
as well as improved resource utilization ratios. Local storage resources
(DAS) attached to individual client systems can be aggregated to cen-
tralized network storage (NAS) solutions to improve resource availability
and backup capacity. Centralized network attached storage solutions can
be aggregated into dedicated storage area networks (SAN). Ultimately,
distributed file systems (DFS) can aggregate resources of all types into a
seamless body of storage accessible through virtualized resource alloca-
tions, as seen in Figure 7.1.
High-performance storage solutions such as the GridFTP protocol extend
virtual file systems to include storage distributed throughout the enter-
prise into a large, redundant, temporary file storage area. By accumulating
unused space on the local storage devices across a large number of worksta-
tions, for example, a huge pool of storage can be created for temporary sup-
Figure 7.1 Enterprise storage policies can act to aggregate local storage to
centralized systems that in turn can be aggregated using dedicated storage
networking. Ultimately, all storage resources in an enterprise can be enabled
using distributed fi le solutions and storage virtualization systems.
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