What happens in a differential backup process?

In a differential backup process, the primary focus is on capturing changes made to the data since the last full backup. This means that every time a differential backup is performed, it will store those files and updates that have been altered or created after the last full backup was taken. This method allows for a comprehensive backup without having to back up all data again, as would be the case with a full backup.

The advantage of this approach is that it streamlines the backup process and saves time and storage space, while still ensuring that all recent changes are securely stored. When a differential backup is restored, it requires the last full backup and the last differential backup, making the recovery process more efficient compared to other methods.