PPT-Xrootd usage @ LHC An up-to-

date technical survey about xrootdbased storage solutions Outline Intro Main use cases in the storage arena Generic Pure xrootd LHC The AtlasSLAC way The Alice way CASTOR2 Roadmap Conclusions. Bestman. and . Xrootd. Storage. Wei Yang. Alex . Sim. US ATLAS Tier2/Tier3 meeting at Univ. of Chicago. Aug 19-20, 2009. 1. Over View of what SLAC has. 2. Redirector. Xrootd/cmsd. Name space. xrootd. Andrew . Hanushevsky. SLAC National Accelerator Laboratory. Stanford University. 29-October-09. ATLAS Tier 3 Meeting at ANL. http://xrootd.slac.stanford.edu/. 2. Outline. System Overview. What’s it made of and how it works. Samy Chemli EN-MEF. November 2012. Hardware Baseline. Approved ECR. ECR under approval. ECR approval closed. Test . Procedures. Installation Procedures. Open Items. Approved ECR. LHC-JSM-EC-0001. . Tatiana Rijoff, Frank Zimmermann . ColUSM. #19 - 01/03/2013. long-range beam-beam collisions . perturb motion at large betatron amplitudes. , where particles come close to opposing beam. cause . ‘diffusive aperture’. Plans and Reality. Tony Cass. Leader, Database Services Group. Information Technology Department. 11. th. July 2012. 1. HEP, CERN, LHC and LHC Experiments. LHC Computing Challenge. The Technique. In outline. Eric . Prebys. , FNAL. Snowmass 2013 Community Planning Meeting. Fermilab, October 11-13, 2012. Minneapolis. LHC Upgrade Paths (Planned and Potential). October 11-13, 2012. Eric Prebys, Snowmass 2013 CPM, Fermilab. tunnel. to define length of . restricted working . areas. Actual situation. Evolution. How to continue. S. et-up of the spilling test. How. Where. When. Risks. On-going work. Conclusions. 01/11/2013. LSST Data Management. Database Architecture Review. SLAC National Accelerator Laboratory. August 6-7, 2013. Andrew Hanushevsky, SLAC. http://xrootd.org. A Bit Of . XRootD. . History. 1997 – Objectivity, Inc. collaboration. W. Bartmann. with . many inputs from: . M. . Barnes, . C. Bracco, E. Carlier, S. . Cettour. Cave, B. Dehning, R. Folch, G. . Le . Godec. , B. . Goddard, S. Grishin, . E.B. . Holzer, V. Kain, A. Lechner, R. Losito, N. . . Grid. WLCG. M. Witek. On behalf of the team of Polish distributed Tier-2. Outline. . Introduction. History . and status . of Polish Tier-2 . Federation. Example. s. of physics results from LHC experiments. XRootD. monitoring data from . MonALISA. Sergey . Belov. , JINR, . Dubna. Sergey.Belov@cern.ch. DNG section meeting, 30.10.2012. Motivation. XRootD. federations monitoring is of importance for ALICE, ATLAS, CMS. C.-E. . Wulz. (Institute of High Energy Physics). 1. Institute of High Energy Physics of the Austrian Academy of Sciences . New Physics at the LHC. Experimental environment. 2. http://xrootd.slac.stanford.edu. Cooperation among ALICE . SEs. Current status and directions. (The ALICE Global redirector). Fabrizio Furano. CERN IT/GS. Oct 2008. ALICE Offline Week. 0. The ALICE global redirector. Fabrizio Furano. The ALICE recipe for storage. Many sites, exposing the XROOTD protocol. Native XROOTD. A few with DPM+XROOTD. One with CASTOR+XROOTD. A few with . Dcache’s. Xrootd protocol implementation.