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Media type:
Text;
E-Article
Title:
The GridKa tape storage: latest improvements and current production setup
Contributor:
Musheghyan, Haykuhi
[Author];
Ambroj Pérez, Samuel
[Author];
Petzold, Andreas
[Author];
Ressmann, Doris
[Author];
Sundermann, Jan Erik
[Author]
Published:
EDP Sciences, 2022-12-21
Published in:EPJ Web of Conferences, 251, Art.-Nr.: 02014 ; ISSN: 2100-014X
Footnote:
Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen.
Description:
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.