How important is your data?
I can only speculate since I do not know Maxtor. But I think the main challenge is to find the best solution to your needs. Not necessary go with what came bundle with your USB drive.
I am not an expert on this field, but I have my own experience in loosing data and the cost of it. Below may not apply to your needs if you are a home user.
If you need a real-time backup, to avoid hard drive crashes the solution could be having a RAID-1 configuration that mcgarig1 is talking about. RAID-1 is two hard drives that mirrors basically real-time. So every time you save a file, it is written on two physical disks.
If you also want to have a backup, so you can find a file deleted by mistake, I can only recommend having a dedicated computer on the same network, that real time or on a schedule base, copies files from your computer. See my earlier post.
None of the two secure you from data loss in an event of virus or fire. In that case use a cloud service or backup on tapes or separate USB drive that you keep offsite.
It all come at a cost. So ask yourself how important your data is? How much automated the backup should be to fits my needs? And how much can I find in my budget?
My experience, from friends and small business partners is, that they do not have a budget. But they do have insurance covering the house, lost income due to an accident, on their cars etc.