Historical and MiddleManager data in PV?

Hello, using the native Helm Chart provided by Druid (druid/helm/druid/templates at master · apache/druid · GitHub), there is no PV attached to these StatefulSets.

What are the best practices for the data storage in Historical and MiddleManager ? especially for the segment cache in Historical, that can represents huge amount of data and by default these data are stored inside the container itself… so do we have to systematically use PVC to store these data in a more adapted path ?

Thanks.