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Comments from LCB Review

Comments from LCB Review. Preliminary Comments from LCB Review of RD45, April 1998 Jamie Shiers, IT/ASD [ Final comments expected in minutes of June LCB meeting ]. LCB Conclusions and Recommendations.

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Comments from LCB Review

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  1. Comments from LCB Review Preliminary Comments from LCB Review of RD45, April 1998 Jamie Shiers, IT/ASD [ Final comments expected in minutes of June LCB meeting ]

  2. LCB Conclusions and Recommendations • RD45 has met the 1997 milestones set by the LCB and is congratulated for its excellent work. The project has addressed many of the initial questions about the use of object data bases for data persistence during its four year lifetime and shown that commercial solutions can be applied. • The project is now moving into a new phase combining the creation of a production data management service while at the same time continuing R&D to enable the technologies to be used effectively in LHC collaborations. Jamie Shiers, IT/ASD

  3. Comments... • The project should be continued with the next status report scheduled for 18 months time in order to accommodate both production and R&D activities. The referees should make a brief status report to the LCB at 6 month intervals. • The project is entering a new phase where R&D will be carried out in parallel with production activities which are equally important in validating the overall strategy. The LHC experiments are expected to actively participate in defining and performing the necessary R&D. Jamie Shiers, IT/ASD

  4. LCB Milestones (Production) • Provide, together with the IT/PDP group, production data management services based on Objectivity/DB and HPSS with sufficient capacity to solve the requirements of ATLAS and CMS test beam and simulation needs, and for COMPASS and NA45 1999 data taking runs. • Develop and provide appropriate database administration tools, (meta-)data browsers and data import/export facilities, as required for milestone 1. • Develop and provide production versions of the HepOODBMS class libraries, including reference and end-user documentation. Jamie Shiers, IT/ASD

  5. LCB Milestones (R&D) • Continue R&D, based on input and use cases from the LHC collaborations, in the following areas to produce results in time for the next versions of the collaborations' Computing Technical Proposals (end 1999): • Database usage over a wide area network • Clustering and re-clustering strategies • Database integration with mass storage systems • Multi-user, multi-federation issues Jamie Shiers, IT/ASD

  6. Objy Progress • V5.1/2, V6.0 address important outstanding enhancement requests • Not the end! Feedback from production: • Quiesce a federation (V6) • Backup enhancements: exclude “HPSS” DBs (V6) • Longer term: • loosely-coupled federations, schema stuff, other replication enhancements, Java/C++, ... Jamie Shiers, IT/ASD

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