Protecting and efficiently using your data is one of the most important computing topics any photographer or videographer should be acquainted with. This helpful set of videos will give you a quick introduction to the most common RAID setups to help you choose the right one for you.
Coming to you from Fstoppers alum Kyle Ford, these two helpful videos talk about the basics of RAID for photographers and videographers. RAID stands for "redundant array of independent disks" and uses multiple physical disk drives as a way to improve either data redundancy or performance (or both). The first and most important thing to know about RAID is that it does not constitute a backup and should never be thought of as one. A RAID setup is still susceptible to many of the same problems a single drive would be, and even if it wasn't, having both your data and a backup in the same physical location leaves you susceptible to theft and things like natural disasters. It's crucial to always have at least one offsite copy of your data.
Here's the second video on RAID 5 and 6:
A RAID setup can be quite useful if you frequently work with large chunks of data.