The Backup 2.0 concept is based on the value of image based backups. Dealing with a single image is far easier than dealing with the millions of files that an individual server may contain. A single image file can be quite large and thereby cause its own problems when trying to protect it. Server recovery is another key advantage to an image based model. If the backup of the image is stored in a native form, server recovery can be almost instant. Simply point to the image and resume operations. In either a virtual environment or physical this requires some planning.”]
Source: https://www.darkreading.com/database-security/changing-backup-s-image