For each VolumeClaimTemplate entry defined in a StatefulSet, each Pod receives one
PersistentVolumeClaim. In the nginx example above, each Pod receives a single PersistentVolume with a
StorageClass of my-storage-class and 1 Gib of provisioned storage.
1.
If no StorageClass is specified, then the default StorageClass will be used. When a Pod is (re)scheduled onto
a node, its volumeMounts mount the PersistentVolumes associated with its PersistentVolume Claims.
2.
Note that, the PersistentVolumes associated with the Pods' PersistentVolume Claims are not deleted when
the Pods, or StatefulSet are deleted. This must be done manually