Btw, for those who might have the same “problem” command i used to move ibay folder to home is (if ibay folder does not exist in /home)
mv /var/lib/nethserver/ibay/ /home/ibay/
and then to create the symlink
ln -s /home/ibay/ /var/lib/nethserver/ibay/
works like magic 
Thanks again @Andy_Wismer
Even Windows is “fooled” and now shows 870gbs 