CSCS provides a data transfer service to get your files from/to CSCS file systems (External Transfer) and a SLURM queue xfer available on Piz Daint to transfer files from/to internal CSCS file systems (Internal Transfer).
The service is implemented using GridFTP with SSH authentication: please have a look at the GridFTP documentation on the Globus web site. All CSCS users are eligible to use GridFTP to transfer files, using the GridFTP endpoint sshftp://gridftp.cscs.ch.
The SLURM queue xfer can submit jobs directly on the nodes of the cluster supporting data transfer. Direct access via ssh to the nodes of this cluster is not allowed.