Answer:
The hard drives are all similarly configured
The server has a network interface card configured the same as the other server in the cluster
The server has the same roles installed as other servers in the cluster
Step-by-step explanation:
Before a server can be added to a failover cluster, the server needs to be configured the same as the servers in the cluster. This includes that the hard drives are all configured the same, identical network interface cards are present and configured for communication, and the same roles are installed on the server.
The Windows Server backup feature cannot be used for failover clustering.
If a local account is used for logging into the server, it will not have the correct permissions to setup the server for failover clustering.