Techniques for DNA-based storage of electronic data are described herein. In an example embodiment, a plurality of files is stored in deoxyribonucleic acid (DNA)-based storage. The plurality of files is encoded in a set of DNA oligos, where a DNA synthesizer system synthesizes first DNA oligos that encode first type of segments from the plurality of files and second DNA oligos that encode second type of segments from the plurality of files, and where the first DNA oligos are synthesized in excess compared to the second DNA oligos.