Update to Phase 2 Resources

1. Update to Phase 2 Resources Christoph Eck IT Department CERN Phase 2 Planning Meeting September 2, 2005

2. Comments to T0 + 1 Tables • The CERN presentation makes the following assumptions: • Tier-0 is presented as fully funded. • Missing funds lead to cuts in the CAF. • The Alice CAF capacity will be required in full during 4 months for the Tier-0, implying “borrowing” from other experiments. • The budget level assumed for the current CAF numbers is the LCG planning budget. The current agreed budget is missing 14.1 MCHF. • Tape bandwidth has disappeared from the tables. • Our understanding of this area is still insufficient to present figures for signature this autumn. • Shall we put some warning text in the MoU? • The NDGF figures are as provided by Farid in April 2005. • They are disputed by ALICE and Finland. • Several centres should have another go at their numbers: • GridKa promised an alignment of their disc capacity. • CC-IN2P3, CNAF and Taipei have not aligned to the new CMS tape requirements. • ATLAS tape requirements are now lower. • The summary table shows where gains can be made.

3. Current T1 Summary

4. Comments to the T2 Tables • 23 centres or federations are now included, producing ~50% of the required capacity. • 14 known centres could not yet announce their numbers. • These include probably important resources: • USA CMS, Canada East+West, MPI Munich etc. • But most of these will be for ATLAS and CMS. • Translating the surplus disk of LHCb into CPU capacity will roughly halve their CPU deficit. • It will now be necessary to get the remaining centres to announce their planning numbers. • And most centres will have to give networking speeds. • We will need to know, who will be ready to sign the MoU this autumn, and what to do with centres with really minimal capacities.

5. Current T2 Summary