The following diagram shows the failover configuration using Network Load Balancing. The two WS_FTP Server installations are members of the cluster. NLB monitors the state of the primary node. The user and configuration databases and the file system are on systems that are outside of the cluster.

Each node has the following configuration:

The following are configured on one or more systems outside of the cluster:

You will configure a shared IP address to be used for the cluster containing Node 1 and Node 2.