Get either:
- An external USB 2.0 hard drive.
--- or --- - An internal hard drive and a USB 2.0 drive enclosure to put it in.
Personally I use Retrospect to backup my data. It is an incremental backup that allows you to restore any file to any point in time that a dump was taken.
ps: As a matter of courtesy, please do not use Caps Lock when posting. It is hard to read and it is consider as shouting.