I'm thinking about building a desktop and using software raid on the motherboard. I would be using WD Red 3T drives, 4 or 5 of them which I'm about to order, on an MSI 870S-G54 motherboard (most appropriate of what I already have here). Using raid 5 would give me safety in case one hdd failed, but how vulnerable am I in case of motherboard failure?

Any thoughts or advice accepted. I'm unlikely to go the route of a hardware raid card, and the cpu would either be one of several AMD I already have or another compatible with the AM3 socket this mobo has if it offers significantly better energy efficiency.

I've never used raid.