In writing or speaking, redundancy is typically not recommended unless you're really trying to drive a point home. When it comes to your digital life, however, redundancy is not only recommended, it's critical.
Redundancy is the term used to refer to data backups. If you have digital assets that you don't want to risk losing forever--including photos, videos, original recordings, financial documents, and other materials--you'll want to be sure to back them up regularly. And it's not just materials on your personal computer, but your mobile devices as well. Depending on how much you use your devices, you may want to back them up as frequently as every few days.
A good rule to follow is the 3-2-1 rule. This rule helps reduce the risk that any one event--such as a fire, theft, or hack--will destroy or compromise both your primary data and all your backups.