SRM-2 testing in PPS

• Nick Thackray

Although SRM-2 is not certified yet, experiments are requesting the PPS to give them support for initial testing of SRM-2 capabilitiies.<br> A number of new sites already running the new SRM-2 are going to join PPS.<br> This will force a re-organization of the data management in PPS

Re-introduction of pre-deployment testing

Operation of SAM PPS Client

Case study for T1s in PPS: Pre-view of production CEs We would like to draw the attention of the T1s in PPS on a deployment scenario we have recently implemented at CERN_PPS<br> Basically, in occasion of major and 'painful' upgrades (e.g. release of SLC4 WNs) the site managers of CERN-PROD deployed in advance the new middleware, which was still due to be in PPS for some time, on a partition of the production system. Then the new prduction CEs were published in CERN_PPS. These proved to have some minor side effects (e.g. some confusion in the information system with respect to the published sitenames) but a number of very valuable advantages:<br> <b><i>The PPS Users (experiments)</i></b> could run real production jobs on a batch system of consistent scale accessing it through CERN_PPS and so tuned their application in advance.<br> <b><i>The CERN-PROD administrators</i></b> could start working on the new release <i>before</i> it actually happened, and took a considerable advantage from early feedback by users. All this testing was done under a lighter pressure, being their service considered still as PPS.<br> <b><i>The CERN_PPS administrators</i></b> could benefit of the experience of the production managers to improve their own knowledge<br> <br> For whoever is interested in this kind of deployment scenario, the corresponding layout of CERN_PPS can be found in: <br> http://egee-pre-production-service.web.cern.ch/egee-pre-production-service/index.php?dir=./PPSsites/CERN_PPS/&