i’ve built my esxi box (skynet) … find some additional info at the unraid forums
something i wanted to document. the command sequence to share the encrypted zfs filesystem after boot is
$ sudo zfs mount -a (asks for the passphrase)
$ sudo zfs set share=name=export_backup,path=/export/backup,prot=nfs backup/data
the latter command is based on my setup also, oracle recently published an article on How to manage ZFS Data Encryption, with more details about zfs data encryption.
i haven’t processed it yet, but it’s worth a read