By default, the maximum version supported is version 3, meaning that the server supports versions 2 and 3 by default. To change the maximum supported version to NFSv4, use the CLI command nfs-max-supported-version. By setting the maximum supported version to 4, you allow the storage server to support NFS versions 2, 3, 4 and 4.1.
Note: NFSv4.1 is supported on HNAS 5000 Series only.