ESUS GOC Local operations GGUS Interaction Service Request First line of support: Problems (experiment specific) will be solved by ESUS (with Savannah) or sent to GGUS using an agreed interface; Grid related problems will be solved by GGUS or sent to GOC using the GGUS system; Data flow Grid User GGUS: Global Grid User Support ESUS: Experiment Specific User Support GOC: Grid Operations Centre Information flow
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