Copy Methods
Single Thread
# tar cf - /source_directory | gzip -4 | ssh -p 22 -i /path/private_key user@host "cd /target_target_directory; gzip -c -d |tar xf - "
Multi Thread
# tar cf - /source_directory | pigz -p 8 -4 | ssh -p 22 -i /path/private_key user@host "cd /target_target_directory; gzip -c -d |tar xf - "