Expanding a Greenplum System

• System Expansion Overview
  You can perform a Greenplum Database expansion to add segment instances and segment hosts with minimal downtime. In general, adding nodes to a Greenplum cluster achieves a linear scaling of performance and storage capacity.
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  Verify your new nodes are ready for integration into the existing Greenplum system.
• Redistributing Tables
  Redistribute tables to balance existing data over the newly expanded cluster.