It's a new world record! Professor of Genetics at Harvard Medical School, George Church and bioengineer Sri Kosuri have successfully managed to store 5.5 petabits of data, which is around 700 terabytes, in just one gram of DNA. The breakthrough science considers DNA like a digital storage device, where strands of DNA that store 96 bits are synthesised, with each of the bases (TGAC) representing a binary value (T and G = 1, A and C = 0), similar to the hard drive storing process where binary data is encoded as magnetic regions. The DNA data can be read by sequencing it. Each strand of DNA has a 19-bit address block at the start that can be converted back in to binary. According to an Extreme Tech report, “One gram of DNA can store 700 terabytes of data equivalent to 14,000 50-gigabyte Blu-ray discs! To store the same kind of data on hard drives, the densest storage medium in use today, you’d need 233 3TB drives, weighing a total of 151 kilos.”
The report further revealed that how DNA can be a great storing medium. “Firstly, the dense nature is of advantage as each bit of a storage medium holds space only for a few atoms large. Secondly, DNA is volumetric unlike its planar disk counterparts. Lastly, it seals the deal with its stability and longevity, as DNA can last hundreds and thousands of years.”
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