Download the latest FreeFileSync 10.4. FreeFileSync is a free open source data backup software that helps you synchronize files and folders on Windows, Linux and macOS.
Simple storage plan following 3-2-1 strategy about about 15 hours agoSo RAID is to pool multiple drives together in a single pool to ensure uptime if a drive fails. You can keep the drives in sync with FreeFileSync: https://freefilesync.org/, for example or some backup software like Veeam Free Agent for Windows or Linux: https://www.veeam.com/windows-endpoint-server-backup-free.html. I.e., you have your main system/PC, and get an external drive (or two) to backup to it.