technically, every flash memory today is a cube (well, more of a skewed cube, a Parallelepiped) Mostly because they can't figure out how to make things faster,

technically, every flash memory today is a cube (well, more of a skewed cube, a Parallelepiped) Mostly because they can't figure out how to make things faster, or as fast as the interface which keeps getting faster, so they just pile a bunch of flash controllers on top of each other. Everyone is running stripped RAID-0 and don't even know it. And if you consider that it also uses varying analog voltage values on each node (!SLC), it is arguably a 4d cube. Take that, 90s!