An explosion of data, along with new requirements for corporate governance, is compelling the construction of petabyte-sized disk subsystems. Given the current costs and complexities in administration for terabyte-sized systems, new innovations in management and monitoring are needed to scale beyond a petabyte. The authors are currently constructing a disk subsystem that will exceed a petabyte within the next few years. This paper presents, from a practitioner's viewpoint, the design and implementation of a management framework that is architected to scale beyond a petabyte of storage.
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