Merge pull request #77263 from iainfoulds/patch-4

[AKS] Add information on volume resizing

Author: PRMerger18

articles/aks/azure-disks-dynamic-pv.md

@@ -37,6 +37,8 @@ Each AKS cluster includes two pre-created storage classes, both configured to wo
     * Standard storage is backed by HDDs, and delivers cost-effective storage while still being performant. Standard disks are ideal for a cost effective dev and test workload.
 * The *managed-premium* storage class provisions a premium Azure disk.
     * Premium disks are backed by SSD-based high-performance, low-latency disk. Perfect for VMs running production workload. If the AKS nodes in your cluster use premium storage, select the *managed-premium* class.
+    
+These default storage classes don't allow you to update the volume size once created. To enable this ability, add the *allowVolumeExpansion: true* line to one of the default storage classes, or create you own custom storage class. You can edit an existing storage class using the `kubectl edit sc` command. For more information on storage classes and creating youor own, see [Storage options for applications in AKS][storage-class-concepts].
 
 Use the [kubectl get sc][kubectl-get] command to see the pre-created storage classes. The following example shows the pre-create storage classes available within an AKS cluster:
 
@@ -277,3 +279,4 @@ Learn more about Kubernetes persistent volumes using Azure disks.
 [install-azure-cli]: /cli/azure/install-azure-cli
 [operator-best-practices-storage]: operator-best-practices-storage.md
 [concepts-storage]: concepts-storage.md
+[storage-class-concepts]: concepts-storage.md#storage-classes