You have 9MB space left on the VMFS Datastore so the max. value your 2TB vDisk can be increased is 9MB which gives you a "Maximum Size" of ~2057GB.
Filling up a Datastore to 99.9999% is not a good idea and i suggest that you delete the 2TB vDisk and create a smaller one... and maybe you select "thin provisioning" this time which means that the vDisk starts small and than grows with the inner Windows NTFS when it filles up with data.
There is a option to tell the VM to store the Snapsthots on a different location(Datastore), but i dont prefer this solution and you should avoid this method because its not "standard".
Regards,
Joerg