Running NetWare FTP Server in the ACTIVE/ACTIVE mode is the recommended configuration because it provides faster recovery after a failure. In this mode, FTP Server runs simultaneously on multiple servers in the cluster. When a Web server fails, the FTP sites on that server fail over to other FTP servers in the cluster. Only FTP sites move in ACTIVE/ACTIVE mode.
NetWare FTP Server can also be run in ACTIVE/PASSIVE mode. In this mode, FTP Server runs on only one node in the cluster at a time. When a Web server fails, FTP Server starts on other specified nodes in the cluster, and the FTP sites that were on the failed server fail over to other nodes in the cluster. This makes ACTIVE/PASSIVE mode marginally slower because FTP Server has to load on other servers in the cluster before FTP sites can fail over.