added new section to set limits

Author: MGoedtel

articles/aks/use-premium-v2-disks.md

@@ -163,6 +163,16 @@ Events:
 [...]
 ```
 
+## Set IOPS and throughput limits
+
+Input/Output Operations Per Second (IOPS) and throughput limits for Azure Premium v2 SSD disk is currently not supported through AKS, as Kubernetes doesn't support this. To adjust performance, you can use the Azure CLI command [az disk update][az-disk-update] and including the `--disk-iops-read-write` and `--disk-mbps-read-write` parameters.
+
+The following example updates the disk IOPS read/write to **5000** and Mbps to **200**. For `--resource-group`, the value must be the second resource group automatically created to store the AKS worker nodes with the naming convention *MC_resourcegroupname_clustername_location*. The value for the `--name` parameter, is the name of the volume created using the StorageClass and it starts with `pvc-`. To identify the disk name, you can run `kubectl get pvc` or navigate to the secondary resource group in the portal to find it. See [manage resources from the Azure portal][manage-resources-azure-portal] to learn more.
+
+```azurecli
+az disk update --subscription $subscription --resource-group myResourceGroup --name $diskName --disk-iops-read-write=5000 --disk-mbps-read-write=200  
+```
+
 ## Using Azure tags
 
 For more information on using Azure tags, see [Use Azure tags in Azure Kubernetes Service (AKS)][use-tags].
@@ -184,3 +194,5 @@ For more information on using Azure tags, see [Use Azure tags in Azure Kubernete
 [azure-disk-volume]: azure-disk-csi.md
 [use-tags]: use-tags.md
 [operator-best-practices-storage]: operator-best-practices-storage.md
+[az-disk-update]: /cli/azure/disk#az-disk-update
+[manage-resources-azure-portal]: ../azure-resource-manager/management/manage-resources-portal.md#open-resources