Estimating Storage Capacity
To estimate how much data your Greenplum Database system can accommodate, use these measurements as guidelines. Also keep in mind that you may want to have extra space for landing backup files and data load files on each segment host.
Configuring Your Systems and Installing Greenplum
Describes how to prepare your operating system environment for Greenplum, and install the Greenplum Database software binaries on all of the hosts that will comprise your Greenplum Database system.
About Implicit Text Casting in Greenplum Database
Greenplum Database version 4.3.x is based on PostgreSQL version 8.2. Greenplum Database version 6.x is based on PostgreSQL version 9.4. PostgreSQL 8.3 removed automatic implicit casts between the text type and other data types. When you migrate from Greenplum Database version 4.3.x to version 6, this change in behavior might impact existing applications and queries.