We're looking at the new AWS feature Elastic File System (EFS). One of the caveats is that Windows Server EC2 instances are not supported (https://docs.aws.amazon.com/efs/latest/ug/gs-step-one-create-ec2-resources.html) This appears to be linked to the fact that EFS utilises NFS v4.1, and Windows server will not support this.
However, the official Windows Server 2012 R2 documentation states that it will support NFS server/client v4.1 (https://technet.microsoft.com/en-us/library/jj574143(v=ws.11).aspx)
If this is the case then Windows Server 2012 R2 can mount an EFS v4.1 target, and mention of Windows not being supported are unfounded. It's not clear though, if anyone could answer definitively that would be appreciated.
Best Answer
This is not supported scenario (http://docs.aws.amazon.com/efs/latest/ug/limits.html), no need to check. And I think this is artificial or political limitation.