Hi Guy,
First of all, I would like to know that is there any specific reason you are required to deploy MongoDB using Windows failover clustering?
As suggest by Rhys that MongoDB does has its own clustering capability which is known as
Replication. A replica set is a group of MongoDB nodes that maintain the same data set to provide redundancy and high availability. As replication maintains copies of the same data, you can add additional copies for dedicated purposes, such as data locality, reporting, disaster recovery and backup.
If you have any further questions, could you please elaborate on your use case.
Thanks,
Akshat