Can I have multiple (or different) versions of Directory and Resource Administrator (DRA) servers in a Multi-Master Set (MMS)?
Are multiple DRA server versions supported in a Multi-Master Set?
Directory and Resource Administrator 6.x
Directory and Resource Administrator 7.x
Although not recommended, you can have multiple versions of Directory and Resource Administrator (DRA) servers in a Multi-Master Set (MMS). This statement is true only for a 6.x MMS, or a 7.x MMS. DRA 6.x and 7.x can not exist in the same MMS.
Assistant Admins will be able to connect to either server to perform their day-to-day functions. However, in DRA versions 6.x, 7.0 and 7.0 SP1, the Multi-Master Synchronization between the servers will fail and any newly created ActiveViews, Assistant Admins, Roles, Policies and Triggers will not be replicated over to the secondary servers.
Beginning with DRA 7.5, Multi-Master Synchronization can occur between a DRA 7.x primary server and its secondary servers without loss of functionality.