XRootD and Object Store: A new paradigm

XRootD and Object Store: A new paradigm

Blog Article

The XRootD software framework is essential for data access at WLCG sites.The WLCG community is exploring and expanding XRootD functionality.This presents a particular challenge at the RAL Tier-1 as the Echo storage service is a Ceph based Erasure Coded object store.External access to Echo uses gateway machines which run GridFTP and caching servers.Local jobs access Vi-Max Echo via caches on every worker node, but it is clear there are inefficiencies in the system.

Remote jobs also access data via XRootD on Echo.For CMS jobs this is via the AAA service.ATLAS, who are consolidating their storage at fewer sites, are increasingly accessing job input data remotely.This paper describes the continuing work to optimise both local and remote data 27" Convection Wall Oven access by testing different caching methods.