updated intro sections

Author: MGoedtel

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

@@ -10,6 +10,8 @@ ms.date: 3/22/2023
 
 [Azure Premium SSD v2 disks][azure-premium-v2-disk-overview] offer IO-intense enterprise workloads a consistent sub-millisecond disk latency and high IOPS and throughput. The performance (capacity, throughput, and IOPS) of Premium SSD v2 disks can be independently configured at any time, making it easier for more scenarios to be cost efficient while meeting performance needs.
 
+This article describes how to configure a new or existing AKS cluster to use Azure Premium SSD v2 disks.
+
 ## Before you begin
 
 This feature can only be set at cluster creation or node pool creation time.

articles/aks/use-ultra-disks.md

@@ -10,6 +10,8 @@ ms.date: 3/23/2023
 
 [Azure ultra disks][ultra-disk-overview] offer high throughput, high IOPS, and consistent low latency disk storage for your stateful applications. One major benefit of ultra disks is the ability to dynamically change the performance of the SSD along with your workloads without the need to restart your agent nodes. Ultra disks are suited for data-intensive workloads.
 
+This article describes how to configure a new or existing AKS cluster to use Azure ultra disks.
+
 ## Before you begin
 
 This feature can only be set at cluster creation or when creating a node pool.