From OpenSCADAWiki
Many OpenSCADA nodes provide the ability to select a storage to store their data and which can be specified as:
- Configuration File (<cfg>);
- {DB Module}.{DB Name} — Data Base;
- Generic Storage (<gen>) — the Generic Storage (combined) consisting of the Configuration File and the work Data Base specified in the "Work DB" configuration field; where the Configuration File is primary for the data already existing there, ie their changes, but everything new is created in the Data Base.