Update storage-classes.md

Adding vSphere CSI StorageClass example.

Author: Lorenzo Paris

content/en/docs/concepts/storage/storage-classes.md

@@ -415,6 +415,33 @@ This internal provisioner of OpenStack is deprecated. Please use [the external c
 
 ### vSphere
 
+There are two types of provisioners for vSphere storage classes: 
+
+- [CSI provisioner](#csi-provisioner): `csi.vsphere.vmware.com`
+- [vCP provisioner](#vcp-provisioner): `kubernetes.io/vsphere-volume`
+
+In-tree provisioners are [deprecated](https://kubernetes.io/blog/2019/12/09/kubernetes-1-17-feature-csi-migration-beta/#why-are-we-migrating-in-tree-plugins-to-csi). For more information on the CSI provisioner, see [Kubernetes vSphere CSI Driver](https://vsphere-csi-driver.sigs.k8s.io/) and [vSphereVolume CSI migration](https://kubernetes.io/docs/concepts/storage/volumes/#csi-migration-5).
+
+#### CSI Provisioner
+
+The vSphere CSI StorageClass provisioner works with Tanzu Kubernetes clusters.
+
+```
+kind: StorageClass
+apiVersion: storage.k8s.io/v1
+metadata:
+  name: example-vsphere-sc-csi
+  annotations:
+    storageclass.kubernetes.io/is-default-class: "true"
+provisioner: csi.vsphere.vmware.com
+parameters:
+  datastoreurl: "ds:///vmfs/volumes/vsan:52d8eb4842dbf493-41523be9cd4ff7b7/"
+```
+    
+#### vCP Provisioner 
+
+The following examples use the VMware Cloud Provider (vCP) StorageClass provisioner.  
+
 1. Create a StorageClass with a user specified disk format.
 
     ```yaml