Let's say you subscribe to our Value plan (100 GB disk space) and the cPanel stats show a limitation of 96-97 GB, there is no doubt you will have questions about such discrepancy.
Our servers reserve 3-4% of the resources for system restore. This apply to all accounts. System restore is used by our automatic backup and recovery features which create a backup copy of your files and data everyday. So if something goes wrong (such as hacking or accidental deletion), you will be able to restore your website almost immediately.
We feel this is an important data protection procedure for our customers.