| Issue |
EPJ Web Conf.
Volume 337, 2025
27th International Conference on Computing in High Energy and Nuclear Physics (CHEP 2024)
|
|
|---|---|---|
| Article Number | 01338 | |
| Number of page(s) | 8 | |
| DOI | https://doi.org/10.1051/epjconf/202533701338 | |
| Published online | 07 October 2025 | |
https://doi.org/10.1051/epjconf/202533701338
Next-Gen Storage Infrastructure for ALICE
1 CERN
2 Switch
* e-mail: andreas.joachim.peters@cern.ch
** e-mail: elvin.alin.sindrilaru@cern.ch
Published online: 7 October 2025
ALICE introduced ground-breaking advances in data processing and storage requirements and presented the CERN IT data center with new challenges with the highest data recording requirement of all experiments. For these reasons, the EOSALICEO2 storage system was designed to be cost-efficient, highly redundant, and maximize data resilience to keep data accessible even in the event of unexpected disruptions or hardware failures. With 150 PB of usable storage space, EOSALICEO2 is now the largest disk storage system in use at CERN. We report on our experience and the effectiveness of operating this full production system in Run-3 and during the LHC heavy-ions run and on how this will help in paving the road towards the data deluge coming with Hi-Luminosity LHC. In particular, we report on our experience with RS(10+2) erasure coding in production, the achievable performance of EOSALICEO2, reliability figures, life cycle management, capacity extension, and rebalancing operations.
© The Authors, published by EDP Sciences, 2025
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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