Speaker
Description
Authors:
Costin Grigoras, Adrian Sevcenco
In the ALICE experiment Xrootd is the foundational protocol for all data interactions. It is the sole method for engaging with the 52 storage endpoints and the Xrootd client library and the command line utilities are integral to a wide range of tasks. These tasks include operations carried out by job agents, ROOT-based applications, user shells, and data transfer agents. Xrootd-based server implementations are providing access to 97% of the distributed storage volume, which today consists of more than 400PB of disk space and 375PB of tape archives.
This presentation will show how the distributed data storage is federated with the help of a central file catalogue and centrally issued access tokens, how the different clients are used by the experiment middleware and processing framework and how we monitor the storage infrastructure.