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Storage and Data Management - Background

Storage and Data Management - Background. Jens Jensen, STFC. guid:723ce86b-8e2f-4b6e-97cb-db2fb1622a66. Pics from Yesterday. Overview.

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Storage and Data Management - Background

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  1. Storage and Data Management- Background Jens Jensen, STFC

  2. guid:723ce86b-8e2f-4b6e-97cb-db2fb1622a66 Pics from Yesterday

  3. Overview • “Support the deployment and operation of Grid storage and data management middleware to enable every GridPP site to meet the needs of the its users and the site’s obligations” • Storage and Data Managament Group • Three supporters – Wahid Bhimji (Ed), Sam Skipsey (Gla), Brian Davies (RAL) • “hard core” of ~15 people attending weekly meetings • ~70-80 people on mailing list (mostly T2s), from 10 dif. countries • Blog – http://gridpp-storage.blogspot.com/ • Wiki – https://www.gridpp.ac.uk/wiki/ • Contributions to WLCG (eg TEGs) • “Finding” the Higgs was useful • “We did that – and we support other research, too.”

  4. Technologies • SRM • DPM • StoRM • dCache • (CASTOR) • Storage information systems • CIP and GIPs in BDIIs • Data movers • FTS • (Catalogues) • (LFC)

  5. Technologies • WebDAV (RFC4918) – HEP case is read only • (Study by C.T.Cirstea, Eindhoven) • Uses HTTP (RFC2616), adds a few commands • HEP: only using PROP commands • NFS4 • Local access protocol • Instead of RFIO and DCAP • Future of SRM... • Data access • Data transfer • Data control • Data information • “Reserved space”

  6. Services for VOs • Help getting “onto the grid” • Often local (like Campus Champions, except more ad hoc) • Supporting VO data model • Syncat • Performance tuning • Storage systems • Large VOs and small VOs • ATLAS – fairly well represented • CMS – usu. via sites? • LHCb – “no data at T2s” • ALICE in T1/experiment meetings • Non-LHC VOs – Wedn. meetings

  7. Stuff • Lots of expertise in the group • How do we best make use of it? • DPM support • See Wahid’s presentation • A Plan exists • Information Systems • Accuracy of publishing • The need for EGI-compliant GLUE 2 publishing • Supporting the experiments • Storage “federations” • Future data management • Lots of EU funded projects (and proposals) • Cloud storage – people will ask...

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