Smart Backup is an option available in the Backup Properties section of the Backup Wizard.
The smart backup functionality in Hyper Backup will help you to save space on storage. It uses the MD5 algorithm to scan backup files and excludes duplicates. The MD5 message-digest algorithm is a widely used hash function producing a 128-bit hash value. Although MD5 was initially designed to be used as a cryptographic hash function, it can be used as a checksum to verify data integrity. If checksum for files is the same, Essentials tool will save only one file instead of storing two equal files.
Below is an example of a backup project completed with and without the smart backup functionality selected.