Directory and Resource Administrator 6.x
Directory and Resource Administrator 7.0
Directory and Resource Administrator 7.0 SP1
Whether planning on making major changes or preparing for a catastrophic server failure, the most important information in the registry pertaining to DRA 6.x, 7.0 or 7.0 SP1 is in the HKLM\Software\Mission Critical Software\OnePoint\Administration\Data\Modules\Security key. This key and all subkeys within contain all the ActiveView and Assistant Admin configurations for the entire DRA environment. In the event that the DRA server does fail, reinstalling the operating system and DRA and, finally, importing that registry key will restore those configurations. This will preclude having to recreate them all manually.
As a precaution, it is recommended to export the entire HKLM\Software\Mission Critical Software key, as well. This key is the parent key in the DRA registry hierarchy and contains all information pertaining to DRA and its components. This key should not be imported as a whole after a reinstallation of DRA but it can be used as a reference for rebuilding a complex multi-master environment.
For DRA 7.5 and 8.x versions, see: https://www.netiq.com/kb/esupport/consumer/esupport.asp?id=NETIQKB10793