Hey, just to let you know, software raid nowadays is quite a bit better for home NAS that hardware raid. I would suggest using ZFS and zpools as a software raid.
If you are already past that point though. As far as sharing, if you are just using it as a small home server or NAS and want things simple, you could just use TrueNAS. It would make things much easier.
If you are running your main computer and sharing the files, I would suggest trying NFS instead of Samba. Samba shares are notoriously unreliable and buggy. Windows has NFS support for a while now for your other machines blog.netwrix.com/…/mounting-nfs-client-windows/