SmartDeploy isn't designed to perform backups. SmartDeploy is intended to be used as an imaging solution to ensure a common, consistent computing experience on every endpoint IT manages.
If you have a specific machine and you want to take a point in time backup of it, you can do it with SmartDeploy command-line tools. If you need to restore the machine, that is done from CMD line as well. For additional information on this process, contact SmartDeploy support.