> ## Documentation Index
> Fetch the complete documentation index at: https://docs.xdnalabs.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Storage Properties

> DNA encodes information at the molecular level, offering density, durability, and energy efficiency that no electronic medium can approach.

DNA is the most advanced and durable storage medium known. Each nucleotide base represents two bits of data, providing advantages across every dimension that matters for long-term archival infrastructure.

<CardGroup cols={2}>
  <Card title="Information Density" icon="database">
    One gram of DNA can theoretically store hundreds of petabytes of data.
    Archives that currently require entire data centers can be reduced to
    volumes smaller than a laboratory vial.
  </Card>

  <Card title="Longevity" icon="hourglass">
    DNA remains stable for centuries and in some cases millennia. Ancient DNA
    samples more than two million years old have been successfully sequenced
    proving extraordinary durability. Silica encapsulation makes it ideal for
    permanent archives.
  </Card>

  <Card title="Energy Efficiency" icon="leaf">
    DNA at rest requires no active energy. Unlike disks or tape libraries, it
    remains inert until accessed one of the lowest-energy cold storage solutions
    physically possible.
  </Card>

  <Card title="Scalability" icon="arrows-up-down-left-right">
    Combinatorial encoding lets a relatively small library of components
    generate trillions of unique identifiers covering petabyte to exabyte scale
    datasets without requiring new chemistry.
  </Card>
</CardGroup>

## Permanence

DNA is a universal molecule. Sequencing methods will never become obsolete they will only become faster and cheaper over time. A dataset written today will be recoverable far into the future with increasing ease.

<Note>
  The cost to sequence one million bases has dropped more than one hundred
  thousand-fold since 2001, consistently outpacing Moore's Law. Archives built
  on DNA become *more* accessible every year, not less.
</Note>

## Comparison to Conventional Media

| Property            | HDD / SSD             | Magnetic Tape           | DNA                                 |
| ------------------- | --------------------- | ----------------------- | ----------------------------------- |
| Density             | \~TB per device       | \~TB per cartridge      | Hundreds of PB per gram             |
| Lifespan            | 3–5 years             | 10–30 years             | Centuries to millennia              |
| Idle power          | Active cooling needed | Periodic refresh needed | None                                |
| Format obsolescence | High risk             | High risk               | Universal                           |
| Scalability ceiling | Physical rack space   | Physical rack space     | Combinatorial effectively unlimited |