Comment by Xk

Fine. Assume it's one bit per voxel.

512 petabits = 2 petabytes.

So only 2 petabytes of data. I'd like to see the server that processed those 2 petabytes.

Notch also points out that even still, 8m is quite a small height. Take it to 16m and now you need 4 petabytes of space.