EPJ Web Conf.
Volume 214, 201923rd International Conference on Computing in High Energy and Nuclear Physics (CHEP 2018)
|Number of page(s)||8|
|Section||T4 - Data handling|
|Published online||17 September 2019|
Distributed caching system for multi-site DPM storage
INFN, Napoli Unit,
Complesso Universitario M. S. Angelo Ed. 6, Via Cintia, 80126 Napoli, Italy,
2 INFN, Roma1 Unit, Piazzale Aldo Moro 2, 00185 Roma, Italy
3 INFN, Laboratori Nazionali di Frascati, Via Enrico Fermi 40, 00044 Frascati (Roma), Italy
∗ Corresponding author: firstname.lastname@example.org
Published online: 17 September 2019
The main goal of this work, in the context of WLCG, is to test a storage setup where the storage areas are geographically distributed and the system provides some pools behaving as data caches. Users can find data needed for their analysis in a local cache and process them locally. We first demonstrate that the distributed setup for a DPM storage is almost transparent to the users, in terms of performance and functionalities. Then, we implement a mechanism to fill the storage cache with data registered in Rucio Data Management system and we test it, running a physics analysis that gets its input data from the cache. Thus we demonstrate that the use of such a system can be useful for diskless sites with a local cache only, allowing to optimize the distribution and analysis of experimental data.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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