Hi,
So in order to create your NFS datastore you will need the following in place
1. Configure you NAS device as a NFS server
2. Have a vswitch configured for IP storage (Network tab)
3.The ESXi host needs to have its NFS client enabled (through security profiles section under configuration)
4. The NFS Storage server needs to have been configured to export a NFS mount point that is accessible for the ESXi host on a trusted network
Many tx!