ANF-54542: backup consideration for max. capacity

Author: b-ahibbard

articles/azure-netapp-files/backup-requirements-considerations.md

@@ -5,7 +5,7 @@ services: azure-netapp-files
 author: b-hchen
 ms.service: azure-netapp-files
 ms.topic: concept-article
-ms.date: 01/27/2025
+ms.date: 07/28/2025
 ms.author: anfdocs
 ms.custom:
   - build-2025
@@ -51,6 +51,8 @@ Azure NetApp Files backup in a region can only protect an Azure NetApp Files vol
 
 * If you need to delete a parent resource group or subscription that contains backups, you should delete any backups first. Deleting the resource group or subscription doesn't delete the backups.
 
+* If the volume reaches its maximum quota, backup creation can fail depending on the quantity of data changes to the volume. If the backup fails, increase the size of the volume then wait for the next scheduled backup. 
+
 ## Next steps
 
 * [Understand Azure NetApp Files backup](backup-introduction.md)