When a Board server is configured to use the Hybrid mode, by default only the database meta-data, the data-dictionary and the bitmaps are loaded in RAM when the database is opened. However it is still possible to set some cubes to be managed fully In-Memory. This can be convenient for the most commonly used cubes or for cubes that are subject to manual data-entry or to DataFlows executed by end-users of the Board application.
Tick the In-RAM check-box of a version to set it to be managed fully in-memory.