When backups stop running, and there is no error showing in the backups, it is probably because the storage pool is degraded.
Go to the appliance and click on Manage Store on the left hand navigation.

If you see that the storage status is degraded, open a ticket with Support.
SUPPORT | 720-204-4500 | 800-352-0248
- Please contact your Partner Success Manager or Support if you have specific technical questions.
- Subscribe to the Axcient Status page for a list of status updates and scheduled maintenance.