The following restrictions apply to all Replication Server warm standby applications:
One Replication Server manages both the active and standby databases. Both the active and standby databases must be from the same vendor.
Replication Server does not switch client applications to the standby database.
Run the data server for the active and standby databases on different machines. Putting the active and standby databases on the same data server or hardware resources undermines the benefits of the warm standby feature.
Sybase recommends that tables in the active and standby databases should have a primary key defined.