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Data movement between sites, replication and storage are very expensive operations, in terms of time and resources, for the LHC collaborations, and are expected to be even more so in the future. In this work we derived usage patterns based on traces and logs from the data and workflow management systems of CMS and ATLAS, and simulated the impact of different caching and data lifecycle management approaches. Data corresponding to one year of operation and covering all Grid sites have been thedoi:10.5281/zenodo.3598836 fatcat:bhch2gwtkjaytphnu6qui53usm