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28th Conference on Computing in High Energy and Nuclear Physics (CHEP 2026)

25–29 May 2026
Chulalongkorn University
Asia/Bangkok timezone

Fermilab's migration to CTA

25 May 2026, 13:45
18m
Chulalongkorn University

Chulalongkorn University
Oral Presentation Track 1 - Data and metadata organization, management and access Track 1 - Data and metadata organization, management and access

Speaker

Eric Vaandering (Fermi National Accelerator Lab. (US))

Description

In 2025, Fermilab transitioned from its legacy tape storage management software, Enstore, to CTA (CERN Tape Archive).

The replacement system was adapted to satisfy Fermilab use cases, including the ability to read existing data off of Enstore formatted tapes. The new system also includes the ability to read aggregated files from containers, which were managed by Enstore, to maintain good performance with smaller files (under 10 MB). We will detail the developments needed for reading the legacy tapes and small file containers.

We will describe the testing and evaluation process which gave us confidence CTA could replace Enstore. This test was also used to choose between EOS and dCache as the front end file system. Our experience with CTA, including provisioning and performance metrics, will be detailed.

Authors

Dmitry Litvintsev (Fermi National Accelerator Lab. (US)) Duong Hai Nguyen (The State University of New York SUNY (US)) Eric Vaandering (Fermi National Accelerator Lab. (US)) Jeff Derbyshire Lucas Peter Trestka (Fermi National Accelerator Lab. (US)) Rafael Arturo Rocha Vidaurri Scarlet Rachel Norberg (Fermi National Accelerator Lab. (US)) Mr Terrance Jones (FL/CD/SCD/SDS/SSA) Tim Messer (Fermi National Accelerator Lab. (US)) Victor Leopoldo Munoz Flores (Fermi National Accelerator Lab. (US))

Presentation materials

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