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The GridKa tape storage: latest improvements and current production setup

Musheghyan, Haykuhi 1; Ambroj Pérez, Samuel 1; Petzold, Andreas ORCID iD icon 1; Ressmann, Doris 1; Sundermann, Jan Erik 1
1 Scientific Computing Center (SCC), Karlsruher Institut für Technologie (KIT)

Abstract (englisch):

Tape storage remains the most cost-effective system for safe long-term storage of petabytes of data and reliably accessing it on demand. It has long been widely used by Tier-1 centers in WLCG. GridKa uses tape storage systems for LHC and non-LHC HEP experiments. The performance requirements on the tape storage systems are increasing every year, creating an increasing number of challenges in providing a scalable and reliable system. Therefore, providing high-performance, scalable and reliable tape storage systems is a top priority for Tier-1 centers in WLCG.

At GridKa, various performance tests were recently done to investigate the existence of bottlenecks in the tape storage setup. As a result, several bottlenecks were identified and resolved, leading to a significant improvement in the overall tape storage performance. These results were achieved in a test environment and introduction of these achievements in to the production environment required a great effort, among many other things, a new software had to be developed to interact with the tape management software.

This contribution provides detailed information on the latest improvements and changes on the GridKa tape storage setup.

Verlagsausgabe §
DOI: 10.5445/IR/1000154088
Veröffentlicht am 22.12.2022
DOI: 10.1051/epjconf/202125102014
Zitationen: 2
Cover der Publikation
Zugehörige Institution(en) am KIT Scientific Computing Center (SCC)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 2100-014X
KITopen-ID: 1000154088
HGF-Programm 53.52.02 (POF IV, LK 02) GridKa
Erschienen in EPJ Web of Conferences
Verlag EDP Sciences
Band 251
Seiten Art.-Nr.: 02014
Vorab online veröffentlicht am 23.08.2021
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