The directories where Cassandra stores data on the disk. The location is defined in the data_file_directories property in the $CASSANDRA_HOME/conf/cassandra.yaml file.

The default directory is $CASSANDRA_HOME/data/data.

In the BMC Helix Operations Management Cassandra cluster, the data_file_directories property value is $CASSANDRA_HOME/var/lib/data.

For example, /opt/bmc//cassandra/apache-cassandra-3.11.5/var/lib/data.