XRootD and FTS Workshop @ CNRS Rhône Auvergne Delegation Lyon, France

Session

FTS Presentations

Sep 14, 2026, 2:50 PM

71. FTS in Rubin Data Transfers

Wei Yang (SLAC National Accelerator Laboratory (US))

9/14/26, 2:50 PM

Rubin/LSST is using the Rucio/FTS/Xrootd/dCache ecosystem for data transfer and distribution between their Fr/UK/US data facilities and independent data access centers around the world. Here we will outline the integration of Rubin's native data management system Butler and the Rucio ecosystem. We will focus on Rubin's specific challenge of efficiently transferring large number of small files,...

72. Operating Data Movement at SKA Scale: Progress and Future Directions for SRCNet

James William Walder (Science and Technology Facilities Council STFC (GB))

9/14/26, 3:20 PM

SRCNet provides the international data movement infrastructure for the SKA Regional Centre (SRC) network, connecting geographically distributed facilities that will store, distribute, and process SKA science data. As SKAO approaches operations, validating reliable, high-throughput, and scalable data transfer services becomes a critical challenge.

This talk presents the current status of...

81. Site update on FTS at RAL

Rose Cooper

9/14/26, 4:20 PM

1

General overview of the current status of the FTS service being run at RAL and plans for it moving forward.

62. Operational Evolution of the Fermilab FTS3 Service for non-CMS experiments: Modernizing Deployment, Automation, and Elastic Operations

Lorena Lobato Pardavila (Fermi National Accelerator Lab. (US))

9/14/26, 4:40 PM

We present the operational evolution of the Fermilab FTS3 for non-CMS experiments, highlighting the modernization of its Kubernetes deployment, adoption of GitOps-based automation, and migration to a more maintainable infrastructure. We discuss the introduction of elastic scaling, improved monitoring, and lessons learned from operating FTS3 in production to enhance the reliability and...

64. FTS Status and Future Plan at IHEP

Xuantong Zhang (Institute of High Enegry Physics, Chinese Academy of Sciences (CN))

9/14/26, 5:00 PM

IHEP operates FTS3 as a key data transfer service for several high-energy physics experiments, including JUNO, HERD, and other related projects. This talk will report the current status of the FTS3 deployment at IHEP and summarize its use in production data transfer workflows.

We will share operational experience from deployment, maintenance, and troubleshooting, including issues observed...

115. FTS4: State of Testing Affairs

Mihai Patrascoiu (CERN)

9/15/26, 9:00 AM

Description of the FTS4 status and comprehensive EOS tests as part of DC'27 preparation.

102. FTS4@CERN: Establishing QA Procedures

Mihai Patrascoiu (CERN)

9/15/26, 9:30 AM

97. FTS4: Optimising Performance & Efficiency

Louis Regnier

9/15/26, 10:30 AM

This talk will present the performance improvements made in FTS4 to efficiently handle thousands of concurrent transfers. It will provide an overview of how FTS manages transfers internally and how database load has been optimised to improve scalability and overall system performance.

110. FTS4: Scheduler and FlowController: Scalable Scheduling and Adaptive Transfer Concurrency

Nicola Pace

9/15/26, 11:00 AM

The FTS4 Scheduler combines fair resource allocation with database optimizations aimed at improving scalability, throughput, and reliability. The work includes optimizing database triggers and bulk updates, denormalizing frequently accessed counters, and addressing complex deadlock scenarios, including a subtle issue involving unique constraints and transaction isolation. On top of the...

98. FTS4: Tape Daemon Re-Engineering for LHC Run 4

Joao Pedro Lopes (CERN)

9/15/26, 11:30 AM

This talk will cover the work done over the past year to re-engineer the FTS tape daemon, addressing shortcomings in the current design and improving its scalability and performance to meet the demands of LHC Run 4

69. ATLAS Community Talk

Dimitrios Christidis (CERN)

9/15/26, 12:15 PM

ATLAS has relied on FTS to transfer millions of files across the Grid every single day. When a preproduction FTS4 instance was made available to ATLAS, we enthusiastically assisted with its testing. This talk will focus on our testing methodology, observations, and conclusions.

70. LHCb <3 FTS[34]

Christophe Haen (CERN)

9/15/26, 12:35 PM

I promise I'll update the abstract with a better title/description :-)

74. CMS Community Talk

Christos Emmanouil (CERN)

9/15/26, 12:55 PM

An update on CMS Data Management, focused on FTS, covering updates since the last workshop and CMS's experience testing FTS4 so far.

66. Data Challenge 2027

Katy Ellis (Science and Technology Facilities Council STFC (GB))

9/15/26, 2:30 PM

1

The WLCG Data Challenge series drives change and performance improvements in our data movement systems, required in time for the start of the High-Luminosity LHC (HL-LHC). Following challenges in 2021 and 2024, this talk describes the planning in progress for the challenge in 2027, expected to take place near the start of the year. The four LHC experiments plan to take part, alongside others...

89. USCMS Mini-challenges: from DC24 to DC27

Mr Diego Davila (UCSD)

9/15/26, 3:10 PM

1

A timeline, from the USCMS perspective, of the mini-challenges starting from the last Data Challenge in 2024 and the forecast for DC27

68. Rucio Project Talk

Dimitrios Christidis (CERN)

9/16/26, 9:00 AM

The vast majority of scientific collaborations employing Rucio for their data-management needs choose FTS to orchestrate their site-to-site transfers. The two projects have collaborated closely over the years. This talk aims to cover a variety of topics, such as the migration to FTS4, the scaling for the Data Challenge 2027, and OAuth tokens. It will also mention Rucio’s current plans for...

88. Rucio/SENSE Integration update on the path to production

Diego Davila (UCSD)

9/16/26, 9:30 AM

We will present the current status of the Rucio/SENSE project and the plan to be integrated into CMS production.

85. XRootD and FTS in the MADDEN Multi-RI Data Lake

Nikita Avdeev (INFN Torino)

9/16/26, 9:50 AM

The MADDEN project aims to enable seamless data access and sharing across multiple Research Infrastructures (RIs) by developing a Multi-RI Data Lake based on Rucio. As part of the project, production and test Rucio servers were deployed for the Einstein Telescope, with three Rucio Storage Elements (RSEs) located at INFN Torino, UCLouvain, and PIC. The RSEs at INFN Torino and UCLouvain are...

111. Deploying FTS in a Kubernetes cluster with S3-only backends

Michel Jouvin (Université Paris-Saclay (FR))

9/16/26, 10:10 AM

The French project MesoNET, aiming at building a national federation of regional HPC/HTC centers, is deploying a Rucio proof-of-concept service to federate S3 endpoints deployed at various sites.

This deployment is using several sepcific approaches:

• The service is deployed in a Kubernetes cluster: this required to build cotnainer images for the different FTS services, reusing part of...

100. FTS4: Introducing TimescaleDB

Mihai Patrascoiu (CERN)

9/16/26, 11:00 AM

Leveraging TimescaleDB to plot FTS4 timeseries data: prototype and future direction

101. FTS Open Discussion

9/16/26, 11:20 AM

92. FTS4 status and plans 2026

Steven Murray (CERN)

The File Transfer System (FTS) is a critical component of the WLCG data-transfer infrastructure, scheduling and executing file transfers between storage endpoints worldwide. This presentation provides a high-level overview of the development and deployment of FTS4, the next major version of FTS, during the past year.