Vertica Analytics Platform Version 10.1.x Documentation
Enterprise Mode Concepts
In an Enterprise Mode Vertica database, the physical architecture is designed to move data as close as possible to computing resources. This architecture differs from a cluster running in Eon Mode which is described in Eon Mode Concepts.
The data in an Enterprise Mode database is spread among the nodes in the database. Ideally, the data is evenly distributed to ensure that each node has an equal amount of the analytic workload.
Hybrid Data Store
When running in Enterprise Mode, Vertica stores data on the database in read optimized store (ROS) containers. ROS data is segmented, sorted, and compressed for high optimization. To avoid fragmentation of data among many small ROS containers, Vertica periodically executes a mergeout operation, which consolidates ROS data into fewer and larger containers.
In Enterprise Mode, each node of the Vertica database stores and operates on data locally. Without some form of redundancy, the loss of a node would force your database to shut down, as some of its data would be unavailable to service queries.
You usually choose to have your Enterprise Mode database store data redundantly to prevent data loss and service interruptions should a node shut down. See K-Safety in an Enterprise Mode Database for details.
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