2021
DOI: 10.1051/epjconf/202125102014
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The GridKa tape storage: latest improvements and current production setup

Abstract: 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 syste… Show more

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(2 citation statements)
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“…Either dCache calls an HSM-specific copy command or it interacts with the tape system via an in-dCache HSM-specific driver, called a nearline storage provider. The latter has been shown (by NDGF, TRIUMF and KIT Tier-1s), to provide better resource utilization and efficiency [10]. The achieve seamless integration with CTA the dCache developers at DESY have therefore implemented a CTA-specific nearline storage provider, called dcache-cta [11], and a corresponding frontend component for CTA.…”
Section: Dcache Integration With Ctamentioning
confidence: 99%
“…Either dCache calls an HSM-specific copy command or it interacts with the tape system via an in-dCache HSM-specific driver, called a nearline storage provider. The latter has been shown (by NDGF, TRIUMF and KIT Tier-1s), to provide better resource utilization and efficiency [10]. The achieve seamless integration with CTA the dCache developers at DESY have therefore implemented a CTA-specific nearline storage provider, called dcache-cta [11], and a corresponding frontend component for CTA.…”
Section: Dcache Integration With Ctamentioning
confidence: 99%
“…The JSON object has elements/fields such as file size, time, file path and other necessary information that is used for staging or flushing from or to tape cartridges respectively. See [13] article for more details.…”
Section: Production Setup: Staging Files From Hpssmentioning
confidence: 99%