By Thomas C. Jepsen
The global marketplace for SAN and NAS garage is predicted to develop from US $2 billion in 1999 to over $25 billion via 2004. As business-to-business and business-to-consumer e-commerce matures, even higher calls for for administration of saved facts will come up. With the fast elevate in info garage standards within the final decade, effective administration of saved information turns into a need for the enterprise. a up to date UC-Berkeley learn predicts that 150,000 terabytes of disk garage may be shipped in 2003. most money, assurance, healthcare, and telecommunications associations are within the means of enforcing garage networks which are disbursed to a couple degree. For those associations, facts integrity is necessary, and they're going to spend a lot money and time on making plans.
one of many fundamental hindrances to enforcing a garage community mentioned through company IT managers is an absence of information approximately garage networking know-how and the explicit matters serious about extending a garage quarter community (SAN) or community connected garage (NAS) over the Metropolitan sector Networks (MAN) or instant region Networks (WAN). allotted garage Networks : structure, Protocols and administration addresses the "terminology hole" among firm community planners and telecommunications engineers, who needs to comprehend the shipping specifications of garage networks with a purpose to enforce dispensed garage networks. Jepsen comprehensively presents IT managers, planners, and telecommunications pros with the knowledge they want on the way to select the applied sciences most suitable for his or her specific setting.
A basic source for all community managers, planners and community layout engineers, in addition to telecommunications engineers and engineering, machine technology, and data know-how scholars.
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Additional info for Distributed Storage Networks: Architecture, Protocols and Management
6 SUMMARY The introduction of storage networks was largely driven by the need to manage large quantities of stored data efﬁciently. The 22 INTRODUCTION TO STORAGE NETWORKING need to synchronize databases at geographically separated locations, together with the development of storage protocols that could be extended over large distances, has led to the development of distributed storage networks to provide additional efﬁciency, reliability, and availability. Mainframe computers provided the original model for storage networks.
2 Distributing NAS Applications NAS applications can be distributed over a wide geographical area in two ways. The use of switched Gigabit Ethernet enables NAS ﬁle managers to be as much as 5 km distant from the production LAN without the need for repeaters. This would enable, for example, a NAS ﬁle manager or head to be co-located with remotely located backend storage for storage consolidation purposes. For the NAS head conﬁguration, the backend SAN could be distributed across multiple sites, using any of the architectures described for multi-site SANs.
2 Distributed SAN for storage sharing and integration. 2 APPLICATIONS FOR DISTRIBUTED NETWORKING REMOTE BACKUP/RESTORAL Remote backup/restoral refers to the use of distributed storage networks to provide non-realtime backup and restoral of user data from a remote location. Backup of data to a remote location is sometimes referred to as electronic tape vaulting. Traditionally, remote backup has been performed by writing data to tape at the primary site, and then transporting the tapes to the remote site by means of a truck or other vehicle.