For SP Server the max. 100 GB is always mentioned as the size for a sitecollection to be able to be restored from backup. Any body any experience with backup restore in SharePoint Online ? Hard to believe with the current max size 25TB for a SiteCollection, that 100GB is still the max. to be restored from backup. Also I read in the SP Online service description that it is also possible to restore a subsite.
That is also such a story online: that only the whole sitecollection can be restored from backup. Any experience in this case in real life ?
Last point is the backup restoration itself: Is it like a snapshot: data and settings, or only data.
So many ghost stories, my colleagues swears that it is only the data. Find it hard to believe!