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XRootD Client: A robust technology for LHC Run-3 and beyond
/ Amadio, Guilherme (CERN) ; Caffy, Cedric (CERN) ; Hanushevsky, Andrew Bohdan (SLAC) ; Simon, Michał Kamil (CERN) ; Smith, David (CERN)
During the LHC era the XRootD framework has proven to be a critical component of numerous data management and software defined storage solutions (most importantly EOS, the CERN storage technology used for the LHC experiments), and as such grew into one of the most strategic storage technologies in the High Energy Physics (HEP) community. Over the last year significant developments in the area of the XRootD client have been introduced, making it even more reliable and robust, as well as easier to debug. [...]
2024 - 7 p.
- Published in : EPJ Web Conf. 295 (2024) 01056
Fulltext: PDF;
In : 26th International Conference on Computing in High Energy & Nuclear Physics, Norfolk, Virginia, Us, 8 - 12 May 2023, pp.01056
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Exploring the virtues of XRootD5: Declarative API
/ Simon, Michal (CERN) ; Hanushevsky, Andrew (SLAC)
Across the years, being the backbone of numerous data management solutions used within the WLCG collaboration, the XRootD framework and protocol became one of the most important building blocks for storage solutions in the High Energy Physics (HEP) community. The latest big milestone for the project, release 5, introduced multitude of architectural improvements and functional enhancements, including the new client side declarative API, which is the main focus of this study. [...]
2021 - 10 p.
- Published in : EPJ Web Conf. 251 (2021) 02063
Fulltext: PDF;
In : 25th International Conference on Computing in High-Energy and Nuclear Physics (CHEP), Online, Online, 17 - 21 May 2021, pp.02063
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An HTTP REST API for Tape-backed Storage
/ Afonso, João (CERN) ; Caffy, Cédric (CERN) ; Patrascoiu, Mihai (CERN) ; Leduc, Julien (CERN) ; Davis, Michael (CERN) ; Murray, Steven (CERN) ; Cortes, Pablo (CERN)
The goal of the HTTP REST API for Tape project is to provide a simple, minimalistic and uniform interface to manage data transfers between Storage Endpoints (SEs) where the source file is on tape. The project is a collaboration between the developers of WLCG storage systems (EOS+CTA, dCache, StoRM) and data transfer clients (gfal2, FTS).For some years, HTTP has been growing in popularity as the preferred data transfer protocol between many WLCG SEs. [...]
2024 - 8 p.
- Published in : EPJ Web Conf. 295 (2024) 01008
Fulltext: PDF;
In : 26th International Conference on Computing in High Energy & Nuclear Physics, Norfolk, Virginia, Us, 8 - 12 May 2023, pp.01008
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LHC Data Storage: Preparing for the Challenges of Run-3
/ Arsuaga-Rios, Maria (CERN) ; Bahyl, Vladimír (CERN) ; Batalha, Manuel (CERN) ; Caffy, Cédric (CERN) ; Cano, Eric (CERN) ; Capitoni, Niccolo (CERN) ; Contescu, Cristian (CERN) ; Davis, Michael (CERN) ; Alvarez, David Fernandez (CERN) ; Guenther, Jaroslav (CERN) et al.
The CERN IT Storage Group ensures the symbiotic development and operations of storage and data transfer services for all CERN physics data, in particular the data generated by the four LHC experiments (ALICE, ATLAS, CMS and LHCb).In order to accomplish the objectives of the next run of the LHC (Run-3), the Storage Group has undertaken a thorough analysis of the experiments’ requirements, matching them to the appropriate storage and data transfer solutions, and undergoing a rigorous programme of testing to identify and solve any issues before the start of Run-3.In this paper, we present the main challenges presented by each of the four LHC experiments. We describe their workflows, in particular how they communicate with and use the key components provided by the Storage Group: the EOS disk storage system; its archival back-end, the CERN Tape Archive (CTA); and the File Transfer Service (FTS). [...]
2021 - 10 p.
- Published in : EPJ Web Conf. 251 (2021) 02023
Fulltext: PDF;
In : 25th International Conference on Computing in High-Energy and Nuclear Physics (CHEP), Online, Online, 17 - 21 May 2021, pp.02023
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Caching Servers for ATLAS
/ Gardner, Robert (University of Chicago, Enrico Fermi Institute) ; Vukotic, Ilija (University of Chicago, Enrico Fermi Institute) ; Yang, Wei (SLAC National Accelerator Laboratory) ; Hanushevsky, Andrew (SLAC National Accelerator Laboratory)
/ATLAS Collaboration
As many Tier 3 and some Tier 2 centers look toward streamlining operations, they are considering autonomously managed storage elements as part of the solution. These storage elements are essentially file caching servers. [...]
ATL-SOFT-SLIDE-2016-702.-
Geneva : CERN, 2016 - 18 p.
Fulltext: PDF; External link: Original Communication (restricted to ATLAS)
In : 22nd International Conference on Computing in High Energy and Nuclear Physics, CHEP 2016, San Francisco, Usa, 10 - 14 Oct 2016
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