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LHC Computer Grid - Rollout > [mailto:[log in to unmask]] On Behalf Of Rod Walker said: > This is certainly an argument for having the > sfns stored in a local catalog, which is the new Atlas DH model. It's the model everyone has had since EDG 2.0, unfortunately no-one ever seems to get around to deploying it :) Incidentally, what is your location model - will you have a central catalogue storing the SE name? If so that would still seem vulnerable to an SE move. Or do you have some indirection? > addition the future system will treat local storage more like > a temporary > scratch area, so we shouldn`t be in this situation again. That might be true for atlas but it won't be for every VO. And some T2 sites will have pretty big SEs, it would be a shame if it doesn't get used ... > I`m happy to share my dodgy scripts, but the work must be > done at least at the T1 level in order to scale. If you mean that migration should be done by the T1s alone I don't think I agree, the T1s generally have no right to modify your catalogues or move your files around (or indeed deal with your mistakes, e.g. if there are catalogue entries with no file or vice versa). Stephen