1. On a active node, yes active node, install antigen 9.0
2. In the middle of setup it will ask for a shared disk's drive letter, don't put drive letter (exmaple X:), instead put name of the sharted disk, in our lab that is "Disk x:".
If you put actual disk letter (X:) you will receive
Failed to get EVS Info.GetMSCSEVSInfo: An Active node of an Active/Passive MSCS cluster is found, but not match for the shared drive is found.
3. Follow the instructions and finish.
4. Install Antigen on every active node.
5. Install Antigen on every passive node.