DNA packs information into much less space than other media. For example, CERN, the European particle-physics lab near Geneva, currently stores around 90 petabytes of data on some 100 tape drives. Goldman’s method could fit all of those data into 41 grams of DNA.
Nature News, 23 January 2013
Towards practical, high-capacity, low-maintenance information storage in synthesized DNAGoldman, N. et al. Nature http://dx.doi.org/10.1038/nature11875 (2013).