hi the file is about 500MB, the source is local disk and the sink is a NFS mounted drive connected over 1Gb/s ethernet. The copy starts with a burst at 20MB/s then slows to less than 100kB/s. So the real time should have been about 30s not 13m30 ------------------------------------- $ time cp video.mp4 /media/audio/video/other/Salamander/video.mp4 real 13m30.489s user 0m0.004s sys 0m0.860s ------------------------------------- There are no entries in /var/log/messages on the sink server (Centos 6.6) and only many of these on the source machine (Fedora 20) Nov 12 11:35:42 hvamm systemd-udevd: failed to execute '/usr/lib/udev/socket:@/org/freedesktop/hal/udev_event' 'socket:@/org/freedesktop/hal/udev_event': No such file or directory. smart test on the drive shows no errors and hours=5330 (222 days), drive is 1TB Seagate where next to look