As from January 2014* the joint Tier 0/1/2 summary report for the 4 LHC experiments will become the official availability report, replacing the OPS-based availability reports.

The new summary reports have been produced in parallel since March 2013 and are available below :

• http://sam-reports.web.cern.ch/sam-reports/2013/201303/wlcg_vos_unofficial/
• http://sam-reports.web.cern.ch/sam-reports/2013/201304/wlcg_vos_unofficial/
• http://sam-reports.web.cern.ch/sam-reports/2013/201305/wlcg_vos_unofficial/
• http://sam-reports.web.cern.ch/sam-reports/2013/201306/wlcg_vos_unofficial/
• http://sam-reports.web.cern.ch/sam-reports/2013/201307/wlcg_vos_unofficial/
• http://sam-reports.web.cern.ch/sam-reports/2013/201308/wlcg_vos_unofficial/
• http://sam-reports.web.cern.ch/sam-reports/2013/201309/wlcg_vos_unofficial/
• http://sam-reports.web.cern.ch/sam-reports/2013/201310/wlcg_vos_unofficial/
• http://sam-reports.web.cern.ch/sam-reports/2013/201311/wlcg_vos_unnoficial/
• http://sam-reports.web.cern.ch/sam-reports/2013/201312/wlcg_vos_unnoficial/

The above listed unofficial reports have been already reviewed by the WLCG monitoring team and by the representatives of the LHC experiments.

The following reports are available at the above mentioned links:

1. Tier0/1 History (last 6 months, HEP VOs) - WLCG_Tier1_History_<VO>
   • Historical overview of the Tier0/Tier1 sites for a given experiment.
   • These four reports will replace the one previously called WLCG_Tier1_History_OPS.
2. Tier0/1/2 All Sites (last month, HEP VOs) - WLCG_All_Sites_<VO>
   • Summary reports for Tier0/Tier1 and Tier2 sites for each experiment.
   • These four reports will replace the ones previously called WLCG_Tier1_Summary and WLCG_Tier2_OPS.
3. Tier0/1 Detailed (last 6 months, HEP VOs) - WLCG_Tier1_VO_<VO>
   • Detailed reports for Tier0/Tier1 for a given VO are exactly the same as before (including availability/reliability numbers).

In summary, it was agreed to remove OPS from all reports and introduce a joint Tier0/1/2 summary report for each experiment. The new joint Tier0/1/2 summary report contains a graph-based summary of the Tier0/1 availability/reliability followed by a summary of the Tier2 availability/reliability per federation as well as a detailed summary of Tier2 sites.

Please submit a GGUS ticket (Grid Monitoring SU) if you find any discrepancies in these reports, so we can follow them up on a case by case basis.

The list of critical metrics used to generate the new reports can be found at https://tomtools.cern.ch/confluence/display/SAMDOC/WLCG+Critical+Metrics

* Decision made at Sept 2013 WLCG MB