You are a Dynamics 365 for Customer Service system administrator. You receive an email notification that you have reached 80 percent of your Dynamics 365 storage limit.
You perform the following actions to free up space:
Delete known items that use large amount of storage.

Perform bulk deletes on suspended system jobs.

Delete audit logs older than six months old.

Delete email attachments older than two years old.

The total storage used indicator shows that the storage amount has not changed after you perform the actions.
You need to determine why the storage amount has not changed.
What is the cause?