I use a UGREEN DH4300 Plus NAS to store my files and keep backups, and since those backups run automatically, I don’t have to keep copying things over myself. You still need to check what you’re backing up, though, especially if you’ve moved files around or included folders that contain some of the same data. I recently had ChatGPT Codex audit my NAS, and it found 2TB of duplicate files that I was paying to back up twice.