Indusoft has Database Redundancy for TREND, ALARMS and EVENTS. It's possible to perform redundancy for those tasks because InduSoft knows exactly what to expect from the tables built automatically. For specific Database/ERP or specific tables on your database InduSoft does not know the format of the database, and it can't perform the Sync automatically, however it's possible to build your application in a way that you can create functions that will automatically make the SYNC happen.
This sample application shows how to perform database operations on a Primary Database Connection, and if it doesn't succeed it will try on the Secondary database connection. After a while a SYNC function is called to get all the data from the secondary database and insert on to the primary database.
Also the application shows how to connect the grid object on the 2 databases (primary and secondary) once the primary or secondary is on/off.