Recovery

Vertica can restore the database to a fully functional state after one or more nodes in the system experiences a software- or hardware-related failure. Vertica recovers nodes by querying replicas of the data stored on other nodes. For example, a hardware failure can cause a node to lose database objects or to miss changes made to the database (INSERTs, UPDATEs, and so on) while offline. When the node comes back online, queries other nodes in the cluster to recover lost objects and catch up with database changes.