Drobo fs and HDI Dune Base 3.0 nfs connection


A few days agon i bought a drobo fs because they told me that the drobo fs could make nfs connection with the HDI Dune Base. I installed the drobo app for nfs but it won’t connect. I uses the following line in the exportsfiles:

The ip is from my dune. The dune won’t connect, smb is fine but to bad to play hd files.
Please could someone helpme , what is wrong with the exports. Thanks in advance