Is it allowed to move Datapoints from one Type to another in DRS, when the secondary system is down ?
In a DRS (Disaster Recovery System) all database configuration (datapoint-types, datapoints and configs) is interchanged between the primary and secondary system via ASCII-exports in the primary system and ASCII-imports on the secondary system.
This is done by unsing the "-younger"-Option in ASCII-manager. That means, that every change since a given time stamp is exported, to transmit only the changes of the last syncronisation cycle to the secondary system.
The following interchange of Datapoints will therefore not work:
1.) Initial state
Primary system has a Datapoint "Test", of Datapoint-Typ "A-Type".
Secondary system has also this Datapoint "Test" of Type "A-Type"
2.) Switch off the secondary system
3.) Delete Datapoint "Test" und Datapoint-Type "A-Type" on the primary system and create a new "Test" with Type "B-Type" on the Primary system
4.) Start Secondary system and wait for the next syncronisation cycle
5.) It the next syncronisation is forced, there will be done an ASCII-Export with DP "Test" of Type "B-Type" on primary system
6.) This ASCII-Export will be tried to be imported on secondary system and will fail, because in secondary system, there still exists a Datapoint "Test" with Type "A-Type"
Therefore it is not allowed to interchange Datapoints of the same name between datapoint types, when the secondary system is currently down.