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On Linux filesystems we strongly recommend to use rsync to copy data. Here are some useful examples:
Example | Command | Note |
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Basic usage | rsync -Pauv $SDIR $SERV:/$DDIR/ | Copies a source directory from the local server to the destination directory on a specified server. Only newer files are copied. Interrupted transmissions are continued
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Copy to project directories | rsync -Pauv --no-group $SDIR $SERV:/$DDIR/ | - Everything beneath a project directory should belong to the project, hence chgrp -R $PROJECT $PROJ_DIR is executed automatically on several AWI systems.
- A later/successive rsync into a project directory will reset (copy again) the file, if the group does not match. Use --no-group to prevent this.
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Set group/user and permissions | rsync -Pvrupog --chown=$USR:$GRP --chmod=D770,F660,Dg+s $SDIR $SERV:$/DDIR/ | Sets user, group and sgid at the destination please google yourself for more information on the specified options 
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Parallel rsync |
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find . -maxdepth 1 -type d -print0 | parallel -j8 -0 'rsync -Pauv {} $SERV:$/DDIR/' | cd $SDIR
ls | parallel -j8 rsync -Pauv {} $SERV:$DDIR/
ls | xargs -n1 -P8 -I% rsync -Pauv % $SERV:$DDIR/ | Copy several (e.g. 8) directories at once. Use with care, with a huge number you can easily jam the network (and you do surly  not want to do that )
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On Windows you can install rsync via Cygwin or you can use https://en.wikipedia.org/wiki/Robocopy
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