Merge branch 'main' into release-backup-security

Author: v-alje

articles/app-service/tutorial-ai-openai-chatbot-dotnet.md

@@ -16,7 +16,7 @@ ms.service: azure-app-service
 
 # Tutorial: Build a chatbot with Azure App Service and Azure OpenAI (.NET)
 
-In this tutorial, you'll build an intelligent AI application by integrating Azure OpenAI with a Java Spring Boot application and deploying it to Azure App Service. You'll create a Razor page that sends chat completion requests to a model in Azure OpneAI and streams the response back to the page.
+In this tutorial, you'll build an intelligent AI application by integrating Azure OpenAI with a Java Spring Boot application and deploying it to Azure App Service. You'll create a Razor page that sends chat completion requests to a model in Azure OpenAI and streams the response back to the page.
 
 :::image type="content" source="media/tutorial-ai-openai-chatbot-dotnet/chat-in-browser.png" alt-text="Screenshot showing chatbot running in Azure App Service.":::
 
@@ -175,7 +175,7 @@ Now that your app works locally, let's deploy it to Azure App Service and set up
     - Adding the Cognitive Services OpenAI Contributor role to the managed identity for the Azure OpenAI resource.
     - Adding the `AZURE_OPENAI_ENDPOINT` app setting to your web app.
 
-    Your app is now deployed and connected to Azure OpenAI with managed identity. I reads the `AZURE_OPENAI_ENDPOINT` app setting through the [IConfiguration](/dotnet/api/microsoft.extensions.configuration.iconfiguration) injection.
+    Your app is now deployed and connected to Azure OpenAI with managed identity. It reads the `AZURE_OPENAI_ENDPOINT` app setting through the [IConfiguration](/dotnet/api/microsoft.extensions.configuration.iconfiguration) injection.
 
 3. Open the deployed web app in the browser. Find the URL of the deployed web app in the terminal output. Open your web browser and navigate to it.
 

articles/app-service/tutorial-ai-openai-chatbot-node.md

@@ -16,7 +16,7 @@ ms.service: azure-app-service
 
 # Tutorial: Build a chatbot with Azure App Service and Azure OpenAI (Express.js)
 
-In this tutorial, you'll build an intelligent AI application by integrating Azure OpenAI with a Node.js application and deploying it to Azure App Service. You'll create an Express app with a view and a controller that sends chat completion requests to a model in Azure OpneAI.
+In this tutorial, you'll build an intelligent AI application by integrating Azure OpenAI with a Node.js application and deploying it to Azure App Service. You'll create an Express app with a view and a controller that sends chat completion requests to a model in Azure OpenAI.
 
 :::image type="content" source="media/tutorial-ai-openai-chatbot-nodejs/chat-in-browser.png" alt-text="Screenshot showing chatbot running in Azure App Service.":::
 

articles/azure-netapp-files/TOC.yml

@@ -157,6 +157,8 @@
         href: performance-benchmarks-linux.md
       - name: Large volume performance benchmarks for Linux
         href: performance-large-volumes-linux.md
+      - name: Large volume breakthrough mode performance benchmarks for Linux
+        href: performance-large-volume-breakthrough-mode-linux.md
       - name: Oracle database performance on Azure NetApp Files single volumes
         href: performance-oracle-single-volumes.md
       - name: Oracle database performance on Azure NetApp Files multiple volumes
@@ -179,14 +181,18 @@
           href: application-volume-group-oracle-introduction.md
         - name: Requirements and considerations for application volume group for Oracle
           href: application-volume-group-oracle-considerations.md
-  - name: Data protection and resiliency
+  - name: Hybrid data mobility and protection
     items:
     - name: Reliability in Azure NetApp Files 
       href: ../reliability/reliability-netapp-files.md?toc=azure/azure-netapp-files/toc.json&bc=/azure/azure-netapp-files/breadcrumb/toc.json
     - name: Understand data protection and disaster recovery options
       href: data-protection-disaster-recovery-options.md
     - name: How Azure NetApp Files snapshots work
       href: snapshots-introduction.md
+    - name: Understand caching
+      items: 
+      - name: Understand Azure NetApp Files cache volumes
+        href: cache-volumes.md    
     - name: Azure NetApp Files backup
       items: 
       - name: Understand Azure NetApp Files backup
@@ -345,6 +351,8 @@
         href: object-rest-api-browser.md
     - name: Migrate volumes to Azure NetApp Files
       href: migrate-volumes.md
+    - name: Configure a cache volume  
+      href: configure-cache-volumes.md
     - name: Manage volume access and encryption 
       items:
       - name: Configure export policy for NFS or dual protocol
@@ -415,7 +423,7 @@
           href: configure-application-volume-oracle-azure-resource-manager.md 
       - name: Delete an application volume group
         href: application-volume-group-delete.md
-  - name: Manage data protection  
+  - name: Manage hybrid data mobility and protection  
     items:
     - name: Manage volume snapshots
       items:

articles/azure-netapp-files/azure-netapp-files-metrics.md

@@ -5,7 +5,7 @@ services: azure-netapp-files
 author: b-hchen
 ms.service: azure-netapp-files
 ms.topic: concept-article
-ms.date: 05/27/2025
+ms.date: 09/22/2025
 ms.author: anfdocs
 # Customer intent: As a cloud storage administrator, I want to analyze performance and usage metrics for Azure NetApp Files, so that I can optimize storage provisioning and ensure efficient operation of my storage resources.
 ---
@@ -369,6 +369,44 @@ Azure NetApp Files provides metrics on allocated storage, actual storage usage,
 
 * *Volume cool tier data write size*   
     Data tiered out using `PUT` per volume. 
+
+## Cache volume metrics (preview)
+
+* *Cache miss blocks*      
+
+    This metric counts missed blocks in the caching process. During steady-state, after warming of cache, if this value exceeds client requested blocks, this is indicative of a less than ideal workload type.
+
+* *Client requested blocks*
+
+    A data movement over time count to provide insights into latency. 
+
+* *Constituents at capacity count*    
+
+    A count of the constituents that are at least 90% full.
+
+* *Flex Cache connection status*  
+
+    The metric displays 1 if all the cache volumes can connect to the origin volume. A value of 0 means the connection isn't working. 
+
+* *Maximum file size*  
+   
+    The maximum file size in bytes.
+
+### Ways to access cache volume metrics
+
+Azure NetApp Files metrics are natively integrated into Azure monitor. From within the Azure portal, you can find metrics for Azure NetApp Files cache volumes.
+
+1. In **Select a scope**, enter the full resource ID for the cache volume in the **Search to filter** items box.  
+
+    :::image type="content" source="./media/azure-netapp-files-metrics/access-cache-volumes-metrics.png" alt-text="Screenshot that shows how to access Azure NetApp Files metrics for cache volumes." lightbox="./media/azure-netapp-files-metrics/access-cache-volumes-metrics.png":::
+
+1. Select the volume and apply the scope.   
+
+    :::image type="content" source="./media/azure-netapp-files-metrics/select-cache-volumes-metrics.png" alt-text="Snapshot that shows how to select cache volumes metrics pull-down." lightbox="./media/azure-netapp-files-metrics/select-cache-volumes-metrics.png":::
+
+    Cache-specific metrics along with general volume metrics can be selected from the **Metric** drop down. 
+
+
  
 ## Next steps
 

articles/azure-netapp-files/cache-volumes.md

@@ -0,0 +1,109 @@
+---
+title: Understand Azure NetApp Files cache volumes
+description: Understand what is Azure NetApp Files cache volumes and the benefits of using Azure NetApp Files cache volumes    
+author: netapp-manishc
+ms.service: azure-netapp-files
+ms.topic: concept-article
+ms.date: 11/06/2025
+ms.author: anfdocs
+ms.custom: references_regions
+# Customer intent: As a cloud administrator, I want to understand about Azure NetApp Files cache volumes and the benefits of using Azure NetApp Files cache volumes. 
+---
+
+# Understand Azure NetApp Files cache volumes (preview)
+
+Azure NetApp Files cache volumes enable you to create a cloud-based cache of your external NetApp ONTAP and Cloud Volumes ONTAP storage volumes in Azure. Caching active ("hot") data closer to users and cloud applications improves data access speeds and throughput over WAN connections. This results in cost-effective, low-latency remote access to important files. In practical terms, you can burst on-premises datasets to Azure with near-local performance—ideal for running computational workloads in Azure on your on-premises data or enabling globally distributed teams to collaborate without lengthy file transfer delays.  
+
+## What are cache volumes 
+
+A cache volume in Azure NetApp Files is a cloud-based cache of an "origin" volume, which may reside on-premises or in Cloud Volumes ONTAP.  
+
+:::image type="content" source="./media/cache-volumes/understand-cache-volumes.png" alt-text="Screenshot that shows the architecture of cache volumes." lightbox="./media/cache-volumes/understand-cache-volumes.png":::
+
+The cache volume stores only the most frequently accessed data from the origin, synchronizing transparently to maintain consistency. When an application in Azure reads blocks of a file, if the blocks are present in the cache (a cache hit), they're delivered instantly over the local network. If not (a cache miss), Azure NetApp Files fetches the data blocks from the origin, stores them in the cache, and returns them to the application. Subsequent reads are served directly from Azure at LAN-like speeds. 
+
+Cache volumes support both reads and writes. New data saved to the cache volume is asynchronously written back to the origin, ensuring the origin remains the authoritative copy. This *write-back* caching provides near-local write latency, even when the primary storage is in a remote location. Effectively, cache volumes create a distributed file system spanning on-premises and Azure environments: active data is cached in the cloud for fast access, while the authoritative dataset stays in its original location. 
+
+## Why cache volumes matter 
+
+Organizations often struggle to deliver fast, consistent data access across locations, traditionally duplicating data or accepting high latency for remote access. Cache volumes solve this by providing a smart caching layer, allowing you to keep a single source of truth while Azure acts as a caching tier. Frequently used datasets are available on-demand in Azure with minimal latency and stay synchronized with central storage. Standard file protocols (NFSv3, NFSv4.1, SMB3, and dual-protocol) are supported, requiring no application changes. Management is seamless via the Azure portal. 
+
+## Key Benefits and Use Cases 
+
+Cache volumes unlock a range of scenarios by combining on-premises data "gravity" with cloud agility: 
+
+* **Global Collaboration**
+
+    Distributed teams get LAN-speed access to shared files without maintaining multiple copies. Everyone works on the same central dataset with fast, local reads and writes.
+
+* **Hybrid Cloud Bursting**
+
+    Burst on-premises workloads into Azure on demand, without lengthy data copies. Only needed data is fetched into Azure in real time, minimizing setup time and network load.
+
+* **Global workload relocation** 
+
+    Relocate HPC workloads quickly and efficiently to overcome regional CPU/GPU shortages. 
+
+* **Data-Intensive Workloads**
+    Cache "hot" data near Azure compute, minimizing I/O wait times for read-heavy or latency-sensitive jobs. This leads to faster job completion and higher productivity.  
+    
+* **Lower Costs & Complexity**
+    Serve frequent requests from the Azure NetApp Files cache in Azure, reducing WAN traffic and bandwidth costs. No need for duplicate storage systems at every location; cache only stores what’s actively used. 
+
+## Seamless Integration 
+
+Cache volumes require no special hardware or proxies and use standard protocols, so applications need no modification. Azure NetApp Files cache volumes handle all cache synchronization and consistency, and permissions from the origin volume are preserved. This bridges on-premises and Azure environments securely and intuitively. 
+
+## Supported regions 
+
+Cache volumes are supported in the following regions: 
+
+* Australia Central
+* Australia Central 2
+* Australia East
+* Australia Southeast
+* Brazil South
+* Brazil Southeast
+* Canada Central
+* Canada East
+* Central India
+* Central US
+* East Asia
+* East US
+* East US 2
+* France Central
+* Germany West Central
+* Israel Central
+* Italy North
+* Japan East
+* Korea Central
+* Korea South
+* North Central US
+* North Europe
+* Norway East
+* Qatar Central
+* South Africa North
+* South Central US
+* Southeast Asia
+* Spain Central
+* Sweden Central
+* Switzerland North
+* Switzerland West
+* Taiwan North
+* UAE North
+* UK South
+* UK West
+* US Gov Arizona
+* US Gov Texas
+* US Gov Virginia
+* West Europe
+* West US
+* West US 2
+* West US 3
+
+
+## Next steps
+
+- [Configure a cache volume for Azure NetApp Files](configure-cache-volumes.md)
+
+For more details, visit Configure a cache volume for Azure NetApp Files.