I like the sound of this. Gotta give it a better look.
“Replica is different from most external drives, because it is meant to be a pure backup device. You plug it in to your computer and the first time, it makes a complete backup of your system. You then can leave it connected, and it will provide “continuous data protection” backing up your files as you create them; or disconnect and connect again later, where it will then do an incremental backup of any files that have changed. You can use it on multiple machines. ”