@gostev Thank you for your answer. Keep up your weekly edito it's a great source of information and a nice way to start my workweek
@luca that's fine. My question could be easily misinterpreted. Edition comparison is right. Per-VM backup chain are for enterprise editions only. However, the "read the entire restore point from source" is available in every editions.
I still have hard times figuring out how this option can avoid the storeonce to go crazy when the full backup is merged with the next increment to comply with the standard retention (non-GFS). I will definitely try it though and see how it goes.
I thought I may be able to workaround and avoid the merging by using standard retention of more than a week + a weekly GFS retention. In this setup, the oldest full may never be merged. It will only be deleted when expired. Am I right ?