Speakers
Description
The dCache project provides an open-source, highly scalable distributed storage system deployed at numerous laboratories worldwide. Its modular architecture supports high-rate data ingestion, WAN data distribution, efficient HPC access, and long-term archival storage. Although initially developed for high-energy physics, dCache now serves a broad range of scientific communities with diverse performance and consistency requirements.
This contribution presents recent technical developments in dCache, including on-demand hot file replication to mitigate hotspots and increase I/O throughput, as well as support for multi-namespace deployments that enable sharing of data-serving resources across independent filesystem hierarchies. Additional advances comprise deeper integration with the CERN Tape Archive (CTA), enhanced metadata handling, support for token-based authorization, the bulk QoS transition API, and a REST interface for fine-grained tape interaction. We conclude with an outlook on upcoming developments relevant for HL-LHC and other data-intensive scientific workflows.