I am deploying NextCloud on my Raspberry Pi. I am stuck on what I know is an inefficient way to design and run a system. Currently the configuration sits on an external drive with ext4 file system. I am using ACLs to secure the files on ext4 file system. I however have MS Windows boxes at home. For the sake of other members of the family, I run a cron job that copies files from the ext4 drive to an NTFS drive.
My question is - is there a way I can apply ACLs while having a cross platform file system to use the same backup drive on WIndows and Linux.
Thank you and pardon me if this is a naive question.