For most quick printing companies, electronic file storage is becoming an issue. It is hard to find files.
Every day becomes a challenge as more files are created.
The investment is small when you consider how much you can save in the event of a computer crash. If and when I do have a crash, I can be up and running quickly. I typically do a CD backup once per month. I have a second hard drive attached to the computer for daily backups. You should maintain backups for everything you have, and they should be stored off-site.