Clustered Data Storage for Multi-site Fusion Experiments

摘要

LABCOM data acquisition and management system has already provided full functions in both the local and remote participations for the LHD experiments. This study newly added the function to deal with experimental raw data not only in one experimental device but also from multiple distant sites. Its original distributed structure has enabled the multi-site modification with a minimum change mainly within the data location indexing database for clustered storage. However, the access permission and restriction for each site's data and users should be strictly implemented. The system has started its operation since 2008 under bilateral collaboration between LHD, QUEST, and GAMMA10 experiments, aiming to organize "Fusion Virtual Laboratory" in Japan