We know it backups up.
It's the restore that needs testing.
Windows back software we use has no automated or user controllable options for restoring data, so can't test the windows restore only backup. i.e. we do restores manual when required.
Linux we will be doing a full test restore/migration of a SME 9.2 system later next week will note any bugs found etc.
One minor thing I found on the wiki affa page - the command to install fails
yum install --enablerepo=smecontribs,epel,openfusion smeserver-affa
but this works.
yum install smeserver-affa --enablerepo=smedev,epel,openfusion