Using Windows Server 2008 R2 for vSphere NFS Datastores

I used vGeek’s tutorial on Setting up NFS Server on Windows 2008 R2 for VMware vSphere to add NFS Datastores from my shiny DL380 G6 server.
I also wanted to go one step further and tighten the access to the shares. I added the Identity mapping in the Active Directory Role Service as suggested in his tutorial. However, I didn’t see this part:
run “niscnfg.exe” as administrator
Create an NFS group and add members (NFS commands can be found here)
nfsadmin server creategroup ESX_Hosts
nfsadmin server addmembers ESX_Hosts <IP ADDRESS>
Awesome tutorial!