Ransomware attacks will become next to impossible because the data will be stored in quartz glass by "...permanently changing their physical structure". So this

Ransomware attacks will become next to impossible because the data will be stored in quartz glass by "...permanently changing their physical structure". So this means that the data is written permanently and cannot be modified, and thus, cannot be held for ransom unless the physical hardware is held for ransom. Anyone familiar with this, can you please explain how much data can be stored per cubic centimeter? Not sure if this is a good measure of data density, but since we are talking about crystal and layer stacking I couldn't help but think of the physical size in 3 dimensions.