Full Backup includes media from new network storage option?

I yesterday connected my NAS as a media folder to include camera recordings.
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Unfortunately the full backup creation at night then failed and crashed my whole home assistant os (Pi4B) and I had to reboot it in the morning. Usually the backup is around 200MB, the time when it crashed it was ~6GB. Unfortunately I don’t have any logs due to the restart.

Is there a way to perform a full backup with media, but exclude mounted network drives?
Of course I could do a partial backup, but this would have some minor drawbacks (like restoring a fresh installation would not work from the onboarding screen for example).

Are you sure about that?

If you include everything in the partial backup except your network storage you should be able to restore this during onboarding.

I ran into this issue on my test Pi, when selecting a partial backup in the onboarding it complained with an error message that a restore is not possible with a partial backup (can’t remember the detailed wording).
When I then created a full backup it worked as expected.

The more severe issue is that the full backup includes the mount in /media, I could imagine this is not intended…

So a full backup also tries to backup the content of the mounted network storages (and does it make a difference if I add it as media or share, I haven’t actually understood what the difference is)?
I just upgraded HAOS to version 10 and wanted to start mounting my Nextcloud storage, but this would be a no-go (Nextcloud has 800GB of data) and I better do not want to try that out but therefore first ask here.

At the moment I can just do full regular backups with the Samba Backup Add-On.
Manually performing partial backups with deselecting the network storage can’t be the way to go.
And if I create a script with the partial backup command, it only seems to have the option to include add-ons and folders, but not exclude them?!

this is something iam also curious about.

At this moment i’am trying to mount a network storage, the media mount is working but my bakcup mount is niet working when i make an bakcup nothing happends.
Going true truenas to see what the difference is between the two shares on that side.