Another hard disk or other internal device on your machine:

If your machine has more than one hard disk, you can safeguard against losing data files on one hard disk by zipping and copying files from that hard disk to a second hard disk.

If your machine has a CDR (CD Rewritable), a Zip drive, or other storage device, you can copy to that device. (The "Zip" in "Zip drive" as in Iomega Zip Drive has no connection with the term zip as in zip file or Winzip ).