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
I configure the backup folder on the NAS

In the Control Panel and then Shared Folder, I create a shared folder.

My backup folder is called _Jeedom Backups because it is historically in the same place that I store my Jeedom backups.

Old reflex, I limit the number of users to have access to this file:

The file is ready, as I have authorised the user of my PC, I can also see it from the computer:

I configure the storage of Home Assistant
I go to Settings / System / Storage

I add network storage

To save, you must tick the ‘Save’ radio, put the NAS ip, choose CIFS and then the path to the backup folder, _Jeedom/HA Backups at home. I finally put the user HA (user declared in the NAS) and his/her password.
When I validate, I can see my saved backup file:

And at this point, it is legitimate to wonder how to explain to Home Assistant that it is now necessary to use this new network storage for backups, and no, he understood on his own. Checking ‘Backup’ when creating network storage will automatically redirect all backups to this folder. HA always has a little bit of magic that gives it a systematic lead over all competing systems.
I automate the backup
We must ask Ha to make the backups, a simple automation will do this very well.
alias: Backup - Every night description: "" trigger: - platform: time at: "01:50:00" condition: [] action: - service: hassio.backup _full data: compressed: true mode: single
I look at the result

I waited a few days to post this result, I can see that the backups up to 09/06 were made via the Samba _Backup add-on, since the new version and configuration above, everything is going perfectly in this network folder.
"It's Not Empty"
Like many obviously, I realized that my backups were no longer leaving on my NAS.
I had the message Network storage cannot be mounted at xxxxxxx because it is not empty
This concern is well known and many have the same thing:
I deleted the Samba link and everything was done again, but you have to be alert to the slightest message of storage error in order not to lose this link.

