You have set up, triggered, and acknowledged the datastore usage alarm. Now, address the critical trigger condition and reset the triggered Datastore usage on disk - example alarm to reenable its actions.

Reset the alarm to enable vCenter Server to send email notifications for datastore usage to you.

1

Remove snapshots or virtual machines to reduce datastore usage to below 30%.

2

Right-click the Datastore usage on disk - example alarm in the Alarms pane and select Reset.

When datastore usage reaches 30% again, the alarm will be triggered and you receive an email notification.