Is possibile to add an option on samba share to create a folder that is excluded from data backup?
Because not all data stored in samba shares is “critical” and this option can save a lot of space 
For more information read:
http://docs.nethserver.org/en/latest/backup.html
Exclusion
If you wish to exclude a file or directory from data backup, add a line to the file
/etc/backup-data.d/custom.exclude.
For example, to exclude all directories called Download, add this line:
**Download**
To exclude a mail directory called test, add this line:
/var/lib/nethserver/vmail/test/
Same syntax applies to configuration backup. Modification should be done inside the file
/etc/backup-config.d/custom.exclude.
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