Add Log Analytics workspace deletion guidance and update deployment guide

Author: Abdul-Microsoft

docs/DeploymentGuide.md

@@ -148,6 +148,7 @@ Once you've opened the project [locally](#local-environment), you can deploy it
     - If you encounter an error or timeout during deployment, changing the location may help, as there could be availability constraints for the resources.
 
 6. If you are done trying out the application, you can delete the resources by running `azd down`.
+   > **Note:** If you deployed with `enableRedundancy=true` and Log Analytics workspace replication is enabled, you must first disable replication before running `azd down` else resource group delete will fail. Follow the steps in [Handling Log Analytics Workspace Deletion with Replication Enabled](./LogAnalyticsReplicationDisable.md), wait until replication returns `false`, then run `azd down`.
 
 ### Post Deployment Script:
 

docs/LogAnalyticsReplicationDisable.md

@@ -0,0 +1,28 @@
+# 🛠 Handling Log Analytics Workspace Deletion with Replication Enabled
+
+If redundancy (replication) is enabled for your Log Analytics workspace, you must disable it before deleting the workspace or resource group. Otherwise, deletion will fail.
+
+## ✅ Steps to Disable Replication Before Deletion
+Run the following Azure CLI command. Note: This operation may take about 5 minutes to complete.
+
+```bash
+az resource update --ids "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.OperationalInsights/workspaces/{logAnalyticsName}" --set properties.replication.enabled=false
+```
+
+Replace:
+- `{subscriptionId}` → Your Azure subscription ID
+- `{resourceGroupName}` → The name of your resource group
+- `{logAnalyticsName}` → The name of your Log Analytics workspace
+
+Optional: Verify replication disabled (should output `false`):
+```bash
+az resource show --ids "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.OperationalInsights/workspaces/{logAnalyticsName}" --query properties.replication.enabled -o tsv
+```
+
+## ✅ After Disabling Replication
+You can safely delete:
+- The Log Analytics workspace (manual)
+- The resource group (manual), or
+- All provisioned resources via `azd down`
+
+Return to: [Deployment Guide](./DeploymentGuide.md)