Studying Scientific Data Lifecycle in On-demand Distributed Storage Caches
Julian Bellavita,
Alex Sim,
Kesheng Wu
et al.
Abstract:The XRootD system is used to transfer, store, and cache large datasets from high-energy physics (HEP). In this study we focus on its capability as distributed on-demand storage cache. Through exploring a large set of daily log files between 2020 and 2021, we seek to understand the data access patterns that might inform future cache design. Our study begins with a set of summary statistics regarding file read operations, file lifetimes, and file transfers. We observe that the number of read operations on each f… Show more
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