Choosing a database mode
You can create a Vertica database in one of two modes: Eon Mode or Enterprise Mode.
You can create a Vertica database in one of two modes: Eon Mode or Enterprise Mode. The mode determines the database's underlying architecture, such as the way Vertica stores data, how the database cluster scales, and how data is loaded; the mode cannot be changed after database creation. Database mode does not affect the way you run queries and other everyday tasks while using the database.
For an in-depth explanation of Enterprise Mode and Eon Mode, see Architecture.