The Detached Volumes Detected trigger allows you to trigger a rule's execution when a volume is detected as being detached from an instance. It is particularly useful for cleaning up resources that have been left behind after an instance has been terminated.
The Detached Volumes Detected trigger will usually be used in a rule with a Delete Detached Volumes action to clean up detached volumes. However, it is possible to pair it with any action.
The trigger will be activated when a volume has been detached for the number of days specified in this field.