You can follow the instructions in the link.
If you only want the data to be restored, go until step 5.
As for backup:
1- install a Tapedrive
2- connect an external harddisk to a PC's USB port and make backups to that
3- install another Linux box and use Rsync
4- burn to CD or DVD
It depends on your situation/location/resources.
Hope this helps.
Irian