All, I have a failover setup with nagios. I also have ndoUtils setup for collecting historical data. My setup is described below. master server - running nagios and ndoutils collecting data. The master is also sending host state and service state data using nsca to failover server. master server has active host check, service check and notification enabled. slave server - running nagios and partial ndoutil. no active checks are being done in this slave server. The slave server also has notification disabled. nsca daemon is listening for service and host status from master server. The problem: I am facing the problem where acknowledgements and comments are not up to date in the slave server. I can possibly transfer the retention file to slave server and fix the comments part of the problem. However I do not know how to get all the acknowledgements transfer to the slave server. It would be great if someone can point me to the right direction, how I can solve the acknowledgement problem I describe above. Thanks in advance. -- Cordially, Shadhin Rahman