Having good backups protects your data against all sorts of unpleasant mishaps. A good backup strategy could mean the difference between surviving a catastrophic event such as ransomware or shutting down the business. Having at least 3 different copies of this file is a good idea. The type of media the file is saved to is also important, as well as the type of backup solution. The best way to mitigate this is to store backups in a safe place, preferably under lock and under key key. Use strong passwords and use strong cloud solutions that are zero-knowledge-free.”]
Source: https://blog.malwarebytes.com/101/2017/04/3-2-1-go-make-backups-of-your-data/