MDB - automatic hibernation

Author: RoseHJM

articles/dev-box/how-to-configure-dev-box-hibernation.md

@@ -12,7 +12,7 @@ ms.custom:
   - build-2025
 author: RoseHJM
 ms.author: rosemalcolm
-ms.date: 03/23/2025
+ms.date: 06/23/2025
 ms.topic: how-to
 
 #customer intent: As a platform engineer, I want to configure hibernation for dev box definitions so that I can manage resource usage efficiently. 
@@ -143,6 +143,26 @@ az devcenter admin devbox-definition update
 --dev-box-definition-name <devBoxDefinitionName> -–dev-center-name <devCenterName> --resource-group <resourceGroupName> –-hibernateSupport Enabled
 ``` 
 
+## Enable automatic hibernation for dev boxes that have never been accessed
+
+This feature helps you minimize costs by automatically hibernating dev boxes that start but no user connects to. If a dev box starts and no one connects with RDP, it enters hibernation after the grace period you set. This setting makes sure idle dev boxes don't use resources unnecessarily, so you optimize costs and resource usage.
+
+To set up hibernation for dev boxes that have never been accessed, you need to enable the setting in the dev box pool.
+ 
+1. Sign in to the [Azure portal](https://portal.azure.com).
+1. In the search box, enter **projects**. In the list of results, select **Projects**.
+1. Open the project with the dev box pool you want to update, and then select **Dev box pools**.
+1. Select the dev box pool you want to update, then on the Dev box operations menu (**...**), select **Edit**.
+1. On the **Edit dev box pool** page, select **Hibernate dev boxes that have never been accessed**.
+ 
+   :::image type="content" source="media/how-to-configure-dev-box-hibernation/dev-box-pool-enable-hibernation-not-connected.png" alt-text="Screenshot of the Dev Box pool settings page showing the option to enable hibernation for dev boxes that have not been connected."::: 
+
+1. When you select **Hibernate dev boxes that have never been accessed**, you can set a grace period. This lets users connect to the dev box before it hibernates. Set the **Grace period in minutes** to the time you want.
+
+   :::image type="content" source="media/how-to-configure-dev-box-hibernation/dev-box-pool-hibernation-not-connected-options.png" alt-text="Screenshot of the Dev Box pool settings page showing configuration options for hibernating dev boxes that have not been connected, including the grace period setting.":::
+
+1. Select **Save**.
+
 ### Troubleshooting
 
 If you enable hibernation on a Dev Box definition and the definition reports that hibernation isn't enabled: