RAID is one of the most common terms thrown around in the home lab ecosystem, though there’s a lot more to it than meets the eye. Despite offering some protection for your data, a Redundant Array of Independent/Inexpensive Drives is absolutely not a supplement for backups. Instead, it’s a neat facility that lets you harness spare HDDs (or SSDs, if that’s what you prefer) to provide better fault tolerance or smoother recovery process, depending on your specific RAID mode.