BART takes full backups using the pg_basebackup utility program under the following circumstances:
• The number of thread counts in effect is one, and the --no-pg_basebackup option is not specified with the BACKUP subcommand. See sections 4.1 and 4.2.5 for setting the thread_count parameter in the BART configuration file.In the global section of the BART configuration file, parameter pg_basebackup_path specifies the complete directory path to the pg_basebackup program. See Section 4.1 for information on this parameter.For information on pg_basebackup see the PostgreSQL Core Documentation available at:There are restrictions on using pg_basebackup depending upon the pg_basebackup version and the Postgres database server version.Database servers can only be backed up by using pg_basebackup of the same or later version than the database server version. For example, pg_basebackup version 9.5 can back up database server version 9.5, but it cannot be used to back up database server version 9.6.