Data integrity is not inherent to optical media, but it apparently is with DNA. While special archival grade writable DVDs and BluRays exist, people are cheap, and for the most part will not pay $2+ per disc.<p>&gt; a product which can archive your data a reasonable cost for centuries, and much more conveniently than trying to store&#x2F;recall from DNA.<p>If you&#x27;re going to store media that long, you will also need the equipment to read data off it in <i>n</i> years&#x2F;decades&#x2F;centuries. DNA has been around for a very long time compared to optical media. The need to read DNA will last much longer than optical media. In that time, optical drives are likely to become obsolete and scarce (see the last 5 years), and DNA readers might be extremely cheap by comparison.