A replication system can include Replication Servers or Adaptive Servers of different versions. Each program presents different issues.
You can use Replication Server version 11.5 and later with earlier versions of Replication Server. In earlier versions, all Replication Servers had to be at the same version before you could set the system version and enable certain features. This restriction has been relaxed for systems running Replication Server version 11.0.2 and later.
When all Replication Servers are at least version 11.0.2 and the system version is set to 11.0.2, each Replication Server uses features according to its site version. Replication Servers running version 12.5 can use all 12.5 features among themselves, while Replication Servers running 11.0.2 can only use 11.0.2 features. Such a system is called a mixed-version system; each Replication Server can use all of its features.
See “Restrictions in mixed-version systems” for more information.
If the replication system includes Replication Servers prior to version 11.0.2, the system version number must be set to match the Replication Server with the earliest software version, for example 11.0.1 or 10.1.1. Certain new features that were introduced in later versions, including features of version 12.5, will not be available to any Replication Server. Such a replication system is not called a mixed-version system, because new feature use is restricted.
