Hi,
Are you running ndmpcopy from node-scope, following is an example of node-scope.
::> system services ndmp node-scope-mode status
NDMP node-scope-mode is enabled.
If so, then I would like to verify if you are running ndmpcopy command from the NODE which hosts the Volume you are writing to ?
I mean : Is this volume = "vol_vmwiso" on this Node:DSIPMXNAS01-01 ?
Try runing the ndmpcopy command from the Node, where this volume's ("vol_vmwiso") aggregate is hosted and choose the LIF local to that Node.
I am just guessing, looking at the error "visibility check fail" could be due to the fact that under node-scope, it can only see volumes local to the Node you are running ndmpcopy command.
Thanks!