You can backup all your computers and and mobile devices and access the data from one on any of the others.
It take seconds to install and then backs up your folders and files automatically.
You can add folders and files to a synch folder, which means if you make any changes when working form one device, you’ll see the changes on the others.
You can move data into an archive folder so it is safely stored online. If need be you could then delete the data off your computer to free up space.