If you image a Collector Manager server (for example, by using ZENworks Imaging) and restore the images on different machines, Sentinel does not uniquely identify the new instances of the Collector Manager. This happens because of duplicate UUIDs.
You must generate a new UUID by performing the following steps on the newly installed Collector Manager systems:
Delete the host.id or sentinel.id file that is located in the /var/opt/novell/sentinel/data folder.
Restart the Collector Manager.
The Collector Manager automatically generates the UUID.