Mounting NFS Share as a Data Store

I found a post talking about a mount folder, so thats done.
But Im getting this;

TASK ERROR: EPERM: Operation not permitted

I don't have the NAS locked down to a user, anything from this host should be able to write to it no?
I tried creating a TXT file and then writing to it. But get permissioned denied :(
 
Ok, tried giving myself permissions to it

chmod: changing permissions of 'VMBackUp': Operation not permitted