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Matt, I'm slightly surprised by this, I didn't think that this client setting had any effect. I was sure that the server side always decided on the number of streams. In dCacheSetup there is a parallelStreams=1 field. By default this should be set to 10. I change it to 1 since I've seen better performance with this configuration. There is some information in the service challenge section of the wiki. That being said, I just ran an srmcp of a file into your dCache with the -streams_num=10 option and it worked fine. I think you need to find out more information from the user. Cheers, Greig Matt Doidge wrote: > Hello, > > Some users are complaining that they can't get copies to work in or > out of Lancaster's dcache using the ten streams (-streams_num=10). > Their copies work fine with single streams but fail with timeouts on > mulitple streams. Is there some setting I can adjust to enable their > copies to work in the fashion they desire? Or is there a reason why I > wouldn't want multiple stream copies allowed to/from or dcache? > > cheers for any wisdom, > Matt