Update scale-requirements.md

Author: hariarun18

AKS-Arc/scale-requirements.md

@@ -26,19 +26,38 @@ This article describes the maximum and minimum supported scale count for AKS on
 | Number of node pools in an AKS cluster  | 1  | 16  |
 | Number of nodes in a node pool (empty node pools not supported)  | 1 | 64 |
 | Total number of nodes in an AKS cluster across nodepools | 1 | 200 |
-| Number of AKS clusters per Azure Local cluster | 0 |12 (8 GB ARB)<br>24 (16 GB ARB) |
+| Number of AKS clusters per Azure Local cluster | 0 | 32 |
 
 ## Concurrency for AKS enabled by Arc
 
 | Scale item  | Count  |
 |-------------|--------|
+| Number of concurrent AKS cluster creations on an ARB  | 8 |
+| Number of concurrent node pool creations on an ARB  | 8  |
+| Number of concurrent operations across all different AKS clusters such as upgrade/scaling, etc., excluding creating node pool or clusters  | 32 |
+| Number of long running operations that can be run simultaneously on an AKS cluster  | 1 per cluster. |
+
+## Scale requirements when using autoscaler with AKS on Azure Local
+
+> [!NOTE]
+> When autoscaler is enabled, Arc Resource Bridge (ARB) memory configuration determines the supported number of AKS clusters:
+> - **Up to 12 clusters** with an **8 GB ARB**
+> - **Up to 24 clusters** with a **16 GB ARB**
+>
+> If these limits are exceeded, operations such as creating additional clusters or node pools may not succeed. To manage capacity, we recommend deleting unused clusters using [az aksarc delete](/cli/azure/aksarc#az-aksarc-delete).
+>
+> If autoscaler is enabled on an environment that already exceeds these limits, performance may be impacted. Managing to supported limits is recommended.
+
+To increase ARB memory and support additional clusters when using autoscaler, follow the resizing guide (link pending from Aline Tran).
+
+| Scale item  | Count  |
+|-------------|--------|
+| Max Number of AKS clusters per Azure Local cluster | 12 (8 GB ARB)<br>24 (16 GB ARB) |
 | Number of concurrent AKS cluster creations on an ARB  | 4 |
 | Number of concurrent node pool creations on an ARB  | 4  |
-| Number of concurrent operations across all different AKS clusters such as upgrade/scaling, etc., excluding creating node pool or clusters  |12 (8 GB ARB)<br>24 (16 GB ARB)  |
-| Number of long running operations that can be run simultaneously on an AKS cluster  | 1 per cluster.  |
+| Number of concurrent operations across all different AKS clusters such as upgrade/scaling, etc., excluding creating node pool or clusters  | 12 (8 GB ARB)<br>24 (16 GB ARB)  |
 
-> [!NOTE]
-> Each Arc Resource Bridge (ARB) supports a maximum number of AKS clusters based on its memory configuration (12 clusters for 8 GB ARB, 24 clusters for 16 GB ARB). Once these limits are reached, operations that add new clusters or node pools might not succeed. To manage capacity, consider deleting unused clusters using [az aksarc delete](/cli/azure/aksarc#az-aksarc-delete). 
+Learn more about autoscaling with AKS on Azure Local [here](/azure/aks/aksarc/auto-scale-aks-arc).
 
 ## Default values for virtual machine sizes