Probing the physical limits of reliable DNA data retrieval

Area of Science:

• Biotechnology
• Data Storage
• Molecular Engineering

Background:

• Archival data storage faces limitations with current technologies.
• Synthetic DNA is emerging as a high-density storage medium.
• Digital information can be encoded into DNA nucleotide sequences.

Purpose of the Study:

• To demonstrate reliable file recovery from synthetic DNA with high data density.
• To assess the feasibility of PCR-based random access for DNA data retrieval.
• To investigate the impact of storage parameters on data retrieval success.

Main Methods:

• Encoding digital data into synthetic DNA sequences.
• Storing synthetic DNA at an average of ten copies per sequence.
• Utilizing Polymerase Chain Reaction (PCR)-based random access for data retrieval.
• Analyzing data retrieval success rates across varying file sizes and sequencing coverages.

Main Results:

• Achieved a data density of approximately 17 exabytes per gram, significantly exceeding previous benchmarks.
• Successfully retrieved data from a complex pool of over 10^10 unique DNA sequences per microliter.
• Demonstrated reliable file recovery even with minimal DNA copies (as few as ten per sequence).
• No evidence of approaching complexity limits within the tested pool size.

Conclusions:

• Synthetic DNA enables robust and exceptionally high-density archival data storage.
• PCR-based random access is a viable method for retrieving data from complex DNA pools.
• The demonstrated technology shows great promise for future long-term data preservation solutions.