Matching Pairs Backup MethodsOnline version testout by Mr. B 1 Differential 2 Incremental 3 Synthetic 4 Full Merges the benefits of a full backup with the benefits of an incremental backup. Backs up every file that's changed since the last full backup. Backs up all files–even those that have not changed since the previous backup. Takes longer to restore than a full backup because you must restore the full backup, and then restore each incremental backup in the order it was created.