Microsoft's New 10,000-Year Data Storage Medium: Glass
Published on February 20, 2026 at 02:15AM
Microsoft Research has published a paper in Nature detailing Project Silica, a working demonstration that uses femtosecond lasers to etch data into small slabs of glass at a density of over a Gigabit per cubic millimeter and a maximum capacity of 4.84 terabytes per slab. The slabs themselves are 12 cm by 12 cm and just 2 mm thick, and Microsoft's accelerated aging experiments suggest the data etched into them would remain stable for over 10,000 years at room temperature, requiring zero energy to preserve. The system writes data by firing laser pulses lasting just 10^-15 seconds to create tiny features called voxels inside the glass, each capable of storing more than one bit, and reads it back using phase contrast microscopy paired with a convolutional neural network trained to interpret the images. Writing remains the main bottleneck -- four lasers operating simultaneously achieve 66 megabits per second, meaning a full slab would take over 150 hours to write, though the team believes adding more lasers is feasible.
Published on February 20, 2026 at 02:15AM
Microsoft Research has published a paper in Nature detailing Project Silica, a working demonstration that uses femtosecond lasers to etch data into small slabs of glass at a density of over a Gigabit per cubic millimeter and a maximum capacity of 4.84 terabytes per slab. The slabs themselves are 12 cm by 12 cm and just 2 mm thick, and Microsoft's accelerated aging experiments suggest the data etched into them would remain stable for over 10,000 years at room temperature, requiring zero energy to preserve. The system writes data by firing laser pulses lasting just 10^-15 seconds to create tiny features called voxels inside the glass, each capable of storing more than one bit, and reads it back using phase contrast microscopy paired with a convolutional neural network trained to interpret the images. Writing remains the main bottleneck -- four lasers operating simultaneously achieve 66 megabits per second, meaning a full slab would take over 150 hours to write, though the team believes adding more lasers is feasible.
Read more of this story at Slashdot.
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