There are a lot of automatic processes that run on the Vault server that are critical to daily usage. If any of these processes fail, administrators need to be notified so that the issue can be addressed ASAP before the system gets into a critical state.
If the processes go unmonitored or errors are not addressed in a timely manner, the Vault system can get into a critical state making it impossible to use until the issues are addressed. It can also affect users daily work as they may not be able to get files needed to complete their work.
Create an alert feature in Vault that notifies specific users/administrator of potential problems with the Vault processes. This should be in the form of an email with possibly attaching log files and other important information in the alert.