if its only a few GB or whatever, and not grossly complex, pg_dumpall -h oldhost | psql -h newhost, is the simplest way to move a complete set of databases from an old server to a new. if there are large tables with millions of rows indexed, make sure you set maintenance_work_mem on the new server to 2GB before running this.
it's a full copy from the production, so it's 2.3TB