PersistenceSpec defines the persistence specification

storageClass string (Optional)

storageClass is the name of the storage class used in the persistent volume. If set to “-”, then sets the storage class name “”, which disables dynamic provisioning, if undefined (the default) or set to null then no storage class name is set, selecting the default provisioner (gp2 on AWS, standard on GKE, AWS, and OpenStack).

size string (Optional)

The size of the persistent volume. The default is 5Gi.