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Hi! Is there a possibility for mirroring data between data servers? I ask because we want to upgrade an xrootd server .. is it enough to scp 4TiB between servers? is it safe and consistent (from the redirector view)? On a side note i will take the opportunity to ask other things :) 1. Is there a way to benchmark the dataservers from the point of view of xrootd? something like running a command on redirector and benchmarking a given server or all? (for tuning purposes and also could be used for developer tests?) 2. related to 1. are any of xrootd team aware of http://twiki.mwt2.org/bin/view/ITB/UltraLightKernel ? are there any (up to date) recommendations based on this guys work? Thanks a lot! Adrian