The Greenplum Database gpupgrade utility allows in-place upgrades from a major Greenplum Database 5.x version to a later 6.x major release. The cluster architecture and node count remains the same between version 5.x and 6.x. The upgrade does not require the time-consuming backup and restore typically used for major version upgrades. Greenplum Database administrators use the gpupgrade command-line interface to initiate the upgrade and then manage the upgrade through each of its phases.