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The Economics of Data TransferThis ground breaking document examines the real cost of moving information beyond the traditional confines of a single data center. Covered topics include the effects of distance and topology on cost and real throughput. Getting It RightIn any remote data scenario (Disaster Recover, Remote Backup, Shared Data, etc.) over a significant distance, the cost of the communication bandwidth can quickly become the dominant factor in the Total Cost of Ownership (TCO) formula. It is important, therefore, to ensure the highest utilization possible of the wide area link. The only way to do this effectively is to take a holistic approach and tune parameters at the application, file system, SCSI, fibre channel, and transport layers to get the best overall performance. This may require counterintuitive decisions within a layer, to yield a higher overall system performance. |