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As the need for archival storage systems grows it becomes increasingly more important that the authors examine and understand how existing systems operate and are used under real-world conditions. Without such research, the systems they build and the cases they optimize for may well be based on incorrect assumptions. In this paper, they examine the user behavior of the National Center for Atmospheric Research's (NCAR) archive. In particular, they characterized user sessions and examined namespace locality of accesses within those sessions. Preliminary results suggest within a single session, repeat file accesses are uncommon, and that accessed files are localized within a small set of directories. This paper provides a baseline and preliminary results for a more detailed future study.
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