nc -l 8888
If the answer is yes, then why they are compared here? Anyone on public network might sniff what you are actually sending / receiving.
"tar/pigz/nc transfer is not secure
Finally, there is one advantage that scp still holds: its transfer is secure while pigz/nc transfers data in clear text. So, if you are using unsecured networks, this option is probably not for you."
tar -cf - /u02/databases/mydb/data_file-1.dbf | pigz | ssh user@destination "pigz -d | tar xf - -C /"
All those solutions ( from the OP ) are faster, but you will need some setup, before you could use it from one host remotely and in the end you might end up using good old SMB or NFS which will give you speed ( http://www.linuxquestions.org/questions/linux-networking-3/s... )