Performance and impact of dynamic data placement in ATLAS Thomas Maier, Thomas Beermann, Günter Duckeck, Mario Lassnig, Federica Legger, Matteo Magoni and Ilija Vukotic EPJ Web Conf., 214 (2019) 04025 Published online: 17 September 2019 DOI: 10.1051/epjconf/201921404025