That is another level which has nothing to do with whether the servers themselves are backed up.
The options are limited, but quite granular. You can even choose to strip or keep file attachments, set storage limits, archive length, which user folders to ignore or include, etc...
Server backups are another facet of this whole lie. I can believe that their rotations overwrote the backups from 2 years ago, that is completely feasible... but not the archive system.