@thomas-braun Danke für deinen Tipp, habe neuen Pfad angelegt und es damit wirklich hinbekommen. Läuft perfekt.

@Homoran und @Marc-Berg also den Ton hier muss ich erst gewohnt werden ;-). Ich bin leider einer der Nutzer die vieles aus dem Netz zusammenkopieren und auch teilweise YouTube Videos für solche Tools hernehmen. Daher bitte um etwas Nachsicht mit mir.

Started iobroker ...
[DEBUG] [mount] - Wake on LAN wait 25 Seconds for NAS!
[DEBUG] [mount] - Wake on LAN MAC-Address: 00-11-32-44-25-C9
[DEBUG] [mount] start with {"mountType":"CIFS","type":"storage","source":"local","mount":"//10.10.10.8","debugging":true,"fileDir":"/opt/iobroker/iobroker-data/backitup","wakeOnLAN":true,"macAd":"00-11-32-44-25-C9","wolTime":"25","smb":"vers=2.0","sudo":true,"cifsDomain":"DISKSTATION","clientInodes":false,"deleteOldBackup":true,"ownDir":true,"dir":"/66er Haus/Diverse/Smart Home/iobroker/Backup","dirMinimal":"/66er Haus/Diverse/Smart Home/iobroker/Backup","user":"Backup","pass":"****","ignoreErrors":false}
[DEBUG] [mount] - noserverino option: false
[DEBUG] [mount] - cifs-mount command: "sudo mount -t cifs -o username=Backup,password=****,domain=DISKSTATION,rw,uid=iobroker,gid=iobroker,file_mode=0777,dir_mode=0777,vers=2.0 //10.10.10.8/66er Haus/Diverse/Smart Home/iobroker/Backup /opt/iobroker/backups"
[DEBUG] [mount] - first mount attempt with smb option failed. try next mount attempt without smb option ...
[DEBUG] [mount] - cifs-mount command: "sudo mount -t cifs -o username=Backup,password=****,domain=DISKSTATION,rw,uid=iobroker,gid=iobroker,file_mode=0777,dir_mode=0777 //10.10.10.8/66er Haus/Diverse/Smart Home/iobroker/Backup /opt/iobroker/backups"
[ERROR] [mount] - [undefined Error: Command failed: sudo mount -t cifs -o username=Backup,password=****,domain=DISKSTATION,rw,uid=iobroker,gid=iobroker,file_mode=0777,dir_mode=0777 //10.10.10.8/66er Haus/Diverse/Smart Home/iobroker/Backup /opt/iobroker/backups
mount: bad usage
Try 'mount --help' for more information.

[ERROR] [mount] - Error: Command failed: sudo mount -t cifs -o username=Backup,password=****,domain=DISKSTATION,rw,uid=iobroker,gid=iobroker,file_mode=0777,dir_mode=0777 //10.10.10.8/66er Haus/Diverse/Smart Home/iobroker/Backup /opt/iobroker/backups
mount: bad usage
Try 'mount --help' for more information.```

Ich bin leider auch nicht gerade der erfahrenste User, aber vielleicht hat ja wer einen Tipp für mich.

Bin für jede Hilfe dankbar