Any backup is better than none.
You can backup your data to tape, diskettes, Zip drives, another hard drive, to a CD, to another machine on your network, and you can even backup your files to a server on the Internet. No matter what choice you make, any backup is better than none at all.
Legally Binding: An Oklahoma law firm found that an exiting employee tried to remove files from a computer prior to their departure. Aware that the trash undelete function existed, the trash was also emptied. The data recovery was accomplished and information about the timing of the deletions so that the firm could proceed with prosecution of the former employee.