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Site Reliability Report of CERN Grid Computing Resources (September 2007)

This report provides a comprehensive overview of the availability and reliability of grid computing sites as monitored by CERN from January to September 2007. It highlights key performance statistics, with notable site availability percentages: GridKa/FZK at 91%, RAL at 90%, and TRIUMF at 96%. The average reliability across the best sites reached 93%, showcasing improvements over previous months. This document serves as a valuable resource for understanding site performance trends and the challenges encountered in maintaining grid service continuity.

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Site Reliability Report of CERN Grid Computing Resources (September 2007)

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  1. http://lcg.web.cern.ch/LCG/MB/availability/site_reliability.pdfhttp://lcg.web.cern.ch/LCG/MB/availability/site_reliability.pdf Reliability Reports – September 2007

  2. CERN 100% GridKa/FZK 91% IN2P3 70% RAL 90% SARA-NIKHEF 92% INFN/CNAF 80% TRIUMF 96% FNAL 89% ASGC 93% PIC 93% BNL 91% NDGF n/a

  3. January 07 to September 07 • Average 8 best sites: Sept 93% Aug 94% Jul 93% Jun:87% May 94% Apr 92% • Average all sites: Sept 89% Aug 88% Jul 89% Jun:80% May 89% Apr 89% • * BNL: LCG/gLite CE probed by SAM but not installed with the SL4 upgrade

  4. Comparison with VO-Specific SAM Tests September 2007

  5. Summary of Issues and Solutions Reported

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