You can now disable the installation of the default StorageClass and VolumeSnapshotClass resources. This is useful if you want to change the name of the default resources.
Also, you can now disable the installation of the CSIDriver. This is useful if you want to install multiple instances of this chart in a bigger cluster, for example if your cluster spreads across multiple LANs and you want to provision LAN-local SAN storage to these nodes. You would also need to configure node selector labels, of course.