im sure you can do this,
it probably wont be too fast but if you follow the methods people use for using rsync over ssh you should be able to do it.
if you use ssh keys for authentication you will be able to do it automatically.
I use this idea on my laptop to dump a backup copy of everything onto my server at home.
# rsync -ave ssh / user@desktop:/home/user/z_backup
running that from a console on your Z will make a copy of your root file system onto your deskopt machine,
the next time you run it, it will only copy over what has changed.
adding the
--delete option to rsync will allow the operation to remove files from the backup aswell, this means if you delete a file on the Z, it will be deleted from the backup too
info about ssh key based logins is here :-
-
http://hacks.oreilly.com/pub/h/66 -
I hope this is helpful