Our development server is part of a cluster, will CIAO work?

CIAO! will not work within a load balancing cluster, but can work within a failover cluster if care is taken to ensure that the CIAO! logs do not get fragmented when the main server is not available. Development servers rarely require clustering. If you have a cluster for testing purposes and use the same cluster for both testing and development then you should consider setting up a dedicated development server as per Best Practice recommendations:  Link