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Barisits, M; Serfon, C; Garonne, V; Lassnig, M; Beermann, T; Javurek, T
Journal of physics. Conference series, 10/2017, Letnik: 898, Številka: 6Journal Article
The ATLAS Distributed Data Management system stores more than 220PB of physics data across more than 130 sites globally. Rucio, the next generation data management system of the ATLAS collaboration, has now been successfully operated for two years. However, with the increasing workload and utilization, more automated and advanced methods of managing the data are needed. In this article we present an extension to the data management system, which is in charge of detecting and foreseeing storage elements reaching and surpassing their capacity limit. The system automatically and dynamically rebalances the data to other storage elements, while respecting and guaranteeing data distribution policies and ensuring the availability of the data. This concept not only lowers the operational burden, as these cumbersome procedures had previously to be done manually, but it also enables the system to use its distributed resources more efficiently, which not only affects the data management system itself, but in consequence also the workload management and production systems. This contribution describes the concept and architecture behind those components and shows the benefits made by the system.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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