CERN Accelerating science

Published Articles
Title An efficient, modular and simple tape archiving solution for LHC Run-3
Author(s) Murray, S (CERN) ; Bahyl, V (CERN) ; Cancio, G (CERN) ; Cano, E (CERN) ; Kotlyar, V (Serpukhov, IHEP) ; Kruse, D F (CERN) ; Leduc, J (CERN)
Publication 2017
Number of pages 8
In: J. Phys.: Conf. Ser. 898 (2017) 062013
In: 22nd International Conference on Computing in High Energy and Nuclear Physics, CHEP 2016, San Francisco, Usa, 10 - 14 Oct 2016, pp.062013
DOI 10.1088/1742-6596/898/6/062013
Subject category Computing and Computers
Accelerator/Facility, Experiment CERN LHC
Abstract The IT Storage group at CERN develops the software responsible for archiving to tape the custodial copy of the physics data generated by the LHC experiments. Physics run 3 will start in 2021 and will introduce two major challenges for which the tape archive software must be evolved. Firstly the software will need to make more efficient use of tape drives in order to sustain the predicted data rate of 150 petabytes per year as opposed to the current 50 petabytes per year. Secondly the software will need to be seamlessly integrated with EOS, which has become the de facto disk storage system provided by the IT Storage group for physics data. The tape storage software for LHC physics run 3 is code named CTA (the CERN Tape Archive). This paper describes how CTA will introduce a pre-emptive drive scheduler to use tape drives more efficiently, will encapsulate all tape software into a single module that will sit behind one or more EOS systems, and will be simpler by dropping support for obsolete backwards compatibility.
Copyright/License publication: (License: CC-BY-3.0)

Corresponding record in: Inspire


 Zapis kreiran 2017-12-13, zadnja izmjena 2021-02-09


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