Hydrid Backups The storage limit check is performed before the backup is run. That's why it is short-circuiting the backup. If you are using a version of the product with a 5TB storage limitation, you have a few choices:
1. Reach out to sales and see if they can raise your storage limit to 10TB. If I recall, that can be done for a fee
2. Separate the Local and Cloud backups so if you hit the 5TB limit, you can continue to run local backups
3. Check your retention settings and make sure you are not keeping data for longer than needed and are not keeping more versions of files than needed.
4. If you are running Block-Level backups, make sure your full backup schedule works with your retention settings. For example, if you keep 7 versions and have a 7 Day full backup cycle, you may end up keeping 14 versions until the oldest 7 day set can be deleted.
5. Make sure you are not backing up any folders you do not need to protect. Like internet cache and temp folders.
6. Look on your hard drive for the largest files you are backing up and consider manually deleting some of the backup versions from the cloud using the Storage tab in the product. That may free up the needed space so you can run a backup, and combined with other changes above may help avoid hitting the storage limit again in the future.