NFS is loaded on the all the systems with wich I try to mount the NAS. Mounting other NFS shares don't give any problems. Only when I try to mount the OPEN-E NAS I get the error.
When I rpcinfo -p to the other NFS shares, they are all running the normal services for nfs (portmapper, nfs, mountd, nlockmgr, status). The NAS is onlu tunning portmapper.
Is there a way to start the correct services again on the NAS ?
If this is the case and you are sure that the workstations have NFS load and you can prove that it is loaded, then possibly it was turned off from the server side. Please enable NFS on our Server and for the share as well. To do this for the NAS Server please go to Setup then Server and enable this and for the Shares go to Resources and select the share for NFS file protocol.