|I am confused. An exact copy and incremental are two different things.|
All sorts of ways to clone a drive. Many programs can either clone disk to disk or disk to image. They use a live cd to recover either image or disk.
MS way is to make a master ntbackup with system state then one can choose how to update that by appending or making incremental backups.
1/3 of highway deaths are caused by drunks. The rest are by people who can't drive any better than a drunk.