Merge pull request #232607 from andyzhangx/patch-64

Update azure-blob-csi.md

Author: prmerger-automator[bot]

articles/aks/azure-blob-csi.md

@@ -2,7 +2,7 @@
 title: Use Container Storage Interface (CSI) driver for Azure Blob storage on Azure Kubernetes Service (AKS)
 description: Learn how to use the Container Storage Interface (CSI) driver for Azure Blob storage in an Azure Kubernetes Service (AKS) cluster.
 ms.topic: article
-ms.date: 03/09/2023
+ms.date: 03/29/2023
 
 ---
 
@@ -104,6 +104,10 @@ To have a storage volume persist for your workload, you can use a StatefulSet. T
 
 # [NFS](#tab/NFS)
 
+### Prerequisites
+
+- Your AKS cluster *Control plane* identity (that is, your AKS cluster name) is added to the [Contributor](../role-based-access-control/built-in-roles.md#contributor) role on the VNet and network security group.
+
 1. Create a file named `azure-blob-nfs-ss.yaml` and copy in the following YAML.
 
     ```yml