Vertica Analytics Platform Version 9.2.x Documentation
Although less common than adding a node, permanently removing a node is useful if the host system is obsolete or over-provisioned.
You cannot remove nodes if doing so leaves your cluster without the minimum number of nodes required to maintain your database's current K-safety level (3 nodes for a database with a K-safety level of 1, and 5 nodes for a K-safety level of 2). If you really wish to remove the node or nodes from the database, you first must reduce the K-safety level of your database.
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