In the configuration Greenplum gpinitsystem_config file, need to configure the declare -a DATA_DIRECTORY options
But the default configuration for

 declare - a DATA_DIRECTORY=(/data1/primary/data1/primary/data1/primary/data2/primary/data2/primary/data2/primary) 

Question is why/data1/primary, or repeated/data2/primary to configuration 3 times, what's the meaning? Thank you very much!