Ciao, in the xrootd code I find (e.g. https://root.cern.ch/root/html516/src/TXNetFile.cxx.html) // a. open a non-ROOT <https://root.cern.ch/root/html516/ROOT.html> generic file // "root://server1:port1[,server2:port2,...]/pathfile?filetype=raw" as a way to instruct the client to probe more than 1 server. but if I try it, it does not seem to work: [a07cms04@r113c02s03 CMSSW_11_1_2]$ xrdcp -f 'root:// r171c01s01.marconi.cineca.it, r171c01s02.marconi.cineca.it///store/test/xrootd/T1_IT_CNAF/store/mc/SAM/GenericTTbar/AODSIM/CMSSW_9_2_6_91X_mcRun1_realistic_v2-v1/00000/A64CCCF2-5C76-E711-B359-0CC47A78A3F8.root' . [0B/0B][100%][==================================================][0B/s] Run: [FATAL] Invalid address isn't is supported any more? And, assuming it still works, I understand it is not a round robin between servers, but a failover to the second if the first is not ok. Is there a way instead to use a random one between those provided, such that to implement a "client side" round robin? thanks tom -- Tommaso Boccali INFN Pisa ######################################################################## Use REPLY-ALL to reply to list To unsubscribe from the XROOTD-L list, click the following link: https://listserv.slac.stanford.edu/cgi-bin/wa?SUBED1=XROOTD-L&A=1