Be careful of the difference between a Backup and a Clone.
You really need to Clone the drive
When you use the Disk Clone tool, you copy all contents of one hard disk drive onto another hard disk drive: as a result, both the source and the target disk have the same data. This function allows you to transfer all the information (including the operating system and installed programs) from a small hard disk drive to a large one without having to reinstall and reconfigure all of your software. Disk Clone operation it is not generally used as a backup strategy, as it offers little flexibility.
In general, disk clone is a one time operation designed to clone one disk to a different one for the purpose of migrating to a larger hard drive or to a new machine.