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TY - CONF AU - Kulaga, R. AU - Arroyo Garcia, J.A.R. AU - Boccioli, M. AU - Genuardi, E. AU - Golonka, P. AU - Gonzalez-Berges, M. AU - Tournier, J-C. AU - Varela, F. ED - Schaa, Volker RW ED - Costa, Isidre ED - Fernández, David ED - Matilla, Ãscar TI - Large-Scale Upgrade Campaigns of SCADA Systems at CERN - Organisation, Tools and Lessons Learned J2 - Proc. of ICALEPCS2017, Barcelona, Spain, 8-13 October 2017 C1 - Barcelona, Spain T2 - International Conference on Accelerator and Large Experimental Control Systems T3 - 16 LA - english AB - The paper describes planning and execution of large-scale maintenance campaigns of SCADA systems for CERN accelerator and technical infrastructure. These activities, required to keep up with the pace of development of the controlled systems and rapid evolution of software, are constrained by many factors, such as availability for operation and planned interventions on equipment. Experience gathered throughout the past ten years of maintenance campaigns for the SCADA Applications Service at CERN, covering over 230 systems distributed across almost 120 servers, is presented. Further improvements for the procedures and tools are proposed to adapt to the increasing number of applications in the service and reduce maintenance effort and required downtime. PB - JACoW CP - Geneva, Switzerland SP - 1384 EP - 1388 KW - ion KW - SCADA KW - software KW - controls KW - database DA - 2018/01 PY - 2018 SN - 978-3-95450-193-9 DO - 10.18429/JACoW-ICALEPCS2017-THPHA021 UR - http://jacow.org/icalepcs2017/papers/thpha021.pdf ER -