SPhotoix moves its 5D Memory Crystalcold storage tech closer to deployment in data centers

After decades of research and development, humanity finally has a data storage medium that will outlast us.

The 5D Memory Crystal stores data by using tiny voxels – 3D pixels – in fused silica glass, etched by femtosecond laser pulses. These voxels possess "birefringence," meaning that their light refraction characteristics vary depending upon the polarization and direction of incoming light. 

That difference in light orientation and strength can be read in conjunction with the voxel's location (x, y, z coordinates), allowing data to be encoded in five dimensional space.

And because the medium is silica crystal, similar to optical cable, it's highly durable. It's also capacious: The technology can store up to 360 TB of data on a 5-inch glass platter.

SPhotonix, a company formed last year to commercialize the technology, estimates that even at 190 degrees Celsius, voxels cut in silica crystal should last 13.8 billion years ...