It seems the documentation agrees with you Stephano.
RootDir full path no /var/affa where to store the backup archives. Do not use /home/e-smith or /root as these are included in the backup and therefore the rise option will not work! Recommended: /var/affa
Evidently you are correct according to the documentation, so I am not sure mapping archives to a share would be any different.
I was hoping to have a system in place that someone with only Windows experience could retrieve a file so I could take a holiday.
Maybe a additional rsync (affa) from the /var directory to a ibay , but that would double the space taken !
Dare I ask how you handle restoring of individual files, have you or any user here, been able to simplify it to end user formula while yet using affa?