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May 8 – 12, 2023
Norfolk Waterside Marriott
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The CERN Tape Archive Beyond CERN — an Open Source Data Archival System for HEP

May 9, 2023, 3:00 PM
Norfolk Ballroom III-V (Norfolk Waterside Marriott)

Norfolk Ballroom III-V

Norfolk Waterside Marriott

235 East Main Street Norfolk, VA 23510
Oral Track 1 - Data and Metadata Organization, Management and Access Track 1 - Data and Metadata Organization, Management and Access


Davis, Michael (CERN)


The CERN Tape Archive (CTA) was conceived as the successor to CASTOR and as the tape back-end to EOS, designed for the archival storage of data from LHC Run-3 and other experimental programmes at CERN. In the wider WLCG, the tape software landscape is quite heterogenous, but we are now entering a period of consolidation. This has led to a number of sites in WLCG (and beyond) reevaluating their options and choosing CTA for their future tape archival storage needs. However, the original mandate for CTA created a number of design constraints which are not necessarily optimal for other sites beyond CERN Tier-0. In this contribution, we discuss how the CTA team has engaged with the wider HEP community and collaborated on changes to the software to allow it to be adopted more widely. In particular, we describe community contributions to CTA to allow it to be used as the tape backend for dCache, and to allow migrations from other tape systems such as Enstore. In addition, we discuss improvements to the building and packaging of CTA to remove CERN-specific dependencies and to facilitate easy distribition to other sites, and describe the schema upgrade procedure for the CTA Catalogue database. Finally, we present a roadmap for the community edition of CTA.

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