Revisiting the Metadata Architecture of Parallel File Systems

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Executive Summary

As the types of problems the authors solve in high-performance computing and other areas become more complex, the amount of data generated and used is growing at a rapid rate. Today many terabytes of data are common; tomorrow petabytes of data will be the norm. Much work has been put into increasing capacity and I/O performance for large-scale storage systems. However, one often ignored area is metadata management. Metadata can have a significant impact on the performance of a system. Past approaches have moved metadata activities to a separate server in order to avoid potential interference with data operations.

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