Dell PowerVault NX3500 Administrator's Manual page 162

Cause
162
Troubleshooting
• The client connects using NFS/UDP and there is a firewall in the way.
• The client is not in the export list, the server could not recognize
the client system through NIS, or the server does not accept the
identity you provided.
• The PowerVault NX3500 system is down or has internal file
system problems.
• The mount command got through to the port mapper, but the
rpc.mountd NFS mount daemon was not registered.
• Client system's IP address, IP range, domain name or netgroup is
not in the export list for the volume it is trying to mount from the
PowerVault NX3500 server.
• Either the remote path or the local path is not a directory.
• The client does not have root authority or is not a member of the
system group. NFS mounts and unmounts are only allowed for
root users and members of the system group.