Adding storage account section

Author: alexkarcher-msft

articles/azure-functions/functions-networking-options.md

@@ -95,6 +95,13 @@ Virtual network integration in Functions uses shared infrastructure with App Ser
 
 To learn more about using virtual network integration, see [Integrate a function app with an Azure virtual network](functions-create-vnet.md).
 
+### Restricting your storage account to a virtual network
+
+> [!note] 
+> Temporarily, it may take up to 12 hours for your storage account to become available to your function app once you configure access restrictions on that storage account. During this time your application will be completley offline.
+
+In order to provide a higher level of security, you can restrict your application's storage account to a virtual network. You must then integrate your site with that virtual network to access your storage account. This configuration is supported on all plans that support virtual network integration.
+
 ## Virtual network triggers (non-HTTP)
 
 Currently, to be able to use Function triggers other than HTTP from within a virtual network, you must run your function app in an App Service plan or in an App Service Environment.