you should store information that you are working on at many places;
Obviously, your computer's hard drive. Computer hard discs are the convenient location for your files, but they are often electronic gadgets that can suddenly decide to malfunction.
If you have a network storage device, like a Buffalo linkstation, you can keep a backup of your vital data and share folders and files between your computer's hard disc and the network drive using a tool like sync toy or the brand's software.
Regular backups to a DVD or USB hard drive are one option, but if you want more security, consider services like Google Workspace. You can choose which folders or files you want for preserving online using your Google gmail profile.