While the Backup Plus Slim is pretty much a basic drive in a very small enclosure, the Backup Plus Fast is actually two drives sandwiched into one body. We put both to the test, to help buyers decide which one is better suited to their needs. The good thing is users have a choice between safety and speed. Oddly, of the two products we have in for review, one is rather unsuitable for backing up data to. Seagate's most recent portable storage products are named Backup Plus, recognising the importance of this fact. You never know what might happen to your PC, hard drives, online accounts and portable devices, so it's just good sense to make sure you have multiple copies of everything that you consider irreplaceable - preferably on different media types and in different locations. There's never a bad time to take a backup.