This is great news, since the version 2023.6, the network storage becomes archi-simple, it is managed by the core of Home Assistant. Congratulations to the developers, it was missing.
So I will give up my backups via Samba Backup. They worked perfectly but required the installation of the Samba Backup add-on, I can now uninstall it and delete my Retex on its configuration.

- December 2023 update: I had some problems with Samba, I switched my HA Backup via NFS
