If you're building out a home lab and need shared storage, you'll eventually hit the SAN vs NAS question. Both solve "storage that multiple machines can reach," but they do it differently — and the wrong choice will haunt your weekend troubleshooting sessions for years. This guide focuses on used/refurbished enterprise gear , which is where the real value is. New prosumer NAS appliances are fine, but for $300–600 you can run production-grade hardware that Fortune 500 companies retired last y...