If nasstorage is not showing any contents, check if nasstorage is reachable by pinging it 10.42.75.251, if you are able to ping it then go to super user sudo su, and mount all drives mount -a, then check if all storage are mounted df -Th, if yes, then you can see the contents of 'nasstorage'. If you are unable to ping it then go to server room and switch on the storage and repeat the remaing steps.