Heidelberg 2022 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 15: GRID Computing

T 15.2: Vortrag

Montag, 21. März 2022, 16:30–16:45, T-H28

Probing a tiered storage for a WLCG Tier-3 center — Michael Böhler, •Dirk Sammel, and Markus Schumacher — Albert-Ludwigs-Universität Freiburg

The storage of large amounts of data is an important topic in the HEP community, especially with the start of the High-Luminosity LHC in the near future. This data has to be available to local users at the institutes, which represent the Tier-3 level of the WLCG infrastucture. An interesting scenario would be a "tiered" Tier-3 system consisting of a combination of cold and warm storage. In such a setup, a parallel file system might serve as the warm storage and in addition, an object storage would be used as cold storage to avoid a too large occupancy of the parallel file system. In this talk, performance tests of a local S3 object store using a typical HEP use case are presented. The results are compared to read access to the local parallel storage and to other ATLAS grid sites within the WLCG.