This is an old revision of the document!
“dump” a directory structure and compress the data while streaming it via ssh to a remote server.
dump -af- /path/to/data | gzip -1 - | ssh user@hostname dd of=image.gz
“restore” a directory structure while using gunzip to decompress the data stream via ssh from a remote server.
ssh user@hostname dd if=image.gz | gunzip -1 - | restore /dev/sda