dmftar is a utility designed by SURF specifically for the Data Archive. It is available on the HPC systems and can be used to largely automate the archive and restore processes. dmftar is a wrapper for the Linux tool gnutar and automatically creates multi-volume archive files of any size (but defaults to 100 GB) and can incorporate the transfer of the files to the archive file system if necessary.
This command will unpack the first file of every subfolder within the archive file.
dmftar can also directly transfer the newly created archive file to another system (like the user home folder on the Data Archive) by adding user and system information (provided key-based authentication and key-forwarding have been enabled):