A 1TB drive strikes the perfect balance between a massive game library and affordability. It is also far more reliable than those suspiciously cheap 5TB drives that are often poorly manufactured.

Are you planning to or build one from scratch ?

As another source notes, "For ease of use, RetroBat and Batocera are all-in-one systems. RetroBat is great because you can launch it right from within Windows—no need to mess with your PC BIOS and launch on boot like Batocera for PC".