How to copy hardlinks as hardlinks

[scuba at centroin.com.br]

HI all,

 	I'm doing some backups with rsnapshot, and I want to copy those 
backups to a DVD.
 	Although 'df' and 'du', shows that to total space used for it is 
less then the total capacity of the DVD disk (~ 3.5GB), growisofs/mkisofs 
are treating hardlinks as files (I know it is the idea, but...) so the 
amount of backup volume jumps to +20GB.

 	How can I copy the rsnapshot backup dir to a DVD as it is on HD?

Thank you,

- Marcelo