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Juan Paulo A.Juan Paulo A. CarabuenaCarabuena

Undergraduate SeminarUndergraduate Seminar

ICSLH4 | 8:30 AM | Aug. 8 , 2011ICSLH4 | 8:30 AM | Aug. 8 , 2011

CMSC199 AB2 | 1CMSC199 AB2 | 1stst Semester A. Y. 2011Semester A. Y. 2011--20122012

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CMSC199 AB2 | 1CMSC199 AB2 | 1stst Semester A. Y. 2011Semester A. Y. 2011--20122012

a.k.a. Biostorage or Biocryptography

It is the science of systematically storing data

into an organism with the capability toretrieve it in the future

It has been around for about a decade

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CMSC199 AB2 | 1CMSC199 AB2 | 1stst Semester A. Y. 2011Semester A. Y. 2011--20122012

Hard Disk

Floppy Disk

CD-R CD-RW

DVD

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CMSC199 AB2 | 1CMSC199 AB2 | 1stst Semester A. Y. 2011Semester A. Y. 2011--20122012

Extra power consumption

Low shock resistance

Frequent data error rates Disk sector will eventually wore out

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CMSC199 AB2 | 1CMSC199 AB2 | 1stst Semester A. Y. 2011Semester A. Y. 2011--20122012

Invented by Dr. Carter

Bancroft and Dr.

Catherine Clelland at

Mount Sinai School ofMedicine on Nov. 6, 2001

Hiding authenticated

information inside a

biological information

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CMSC199 AB2 | 1CMSC199 AB2 | 1stst Semester A. Y. 2011Semester A. Y. 2011--20122012

In 2007, Japanese students from

Keio University, led by Dr. Nozomu

Yachie, has successfully wrote

the infamous e=mc2 formula in a

bacterium

They were able to store data but

failed in retrieving it.

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CMSC199 AB2 | 1CMSC199 AB2 | 1stst Semester A. Y. 2011Semester A. Y. 2011--20122012

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CMSC199 AB2 | 1CMSC199 AB2 | 1stst Semester A. Y. 2011Semester A. Y. 2011--20122012

Vast amount of data in very small spaces

Resilient to damage, even nuclear explosion

They keep replicating, making redundantcopies of data

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CMSC199 AB2 | 1CMSC199 AB2 | 1stst Semester A. Y. 2011Semester A. Y. 2011--20122012

Coding System

Encryption

Bacteria

Decryption

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CMSC199 AB2 | 1CMSC199 AB2 | 1stst Semester A. Y. 2011Semester A. Y. 2011--20122012

Encoding Table

Quartenary Number System

DNA Sequence

Compression

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CMSC199 AB2 | 1CMSC199 AB2 | 1stst Semester A. Y. 2011Semester A. Y. 2011--20122012

Data RepresentationData Representation ValueValue

RawRaw DataData CMSC199CMSC199

Encoding TableEncoding Table 6767--7777--8383--6767--4949--5757--5757

Quartenary Number SystemQuartenary Number System

1003103111031010031031110310

0303010321032103030103210321

DNA Base SequenceDNA Base SequenceTAAGTAGTTTAGTATAAGTAGTTTAGTA

AGAGATAGCTAGCTAGAGATAGCTAGCT

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CMSC199 AB2 | 1CMSC199 AB2 | 1stst Semester A. Y. 2011Semester A. Y. 2011--20122012

DEFLATE (Compression Algorithm)

Can reduce homopolymers and repetitive regions

Can store more information

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CMSC199 AB2 | 1CMSC199 AB2 | 1stst Semester A. Y. 2011Semester A. Y. 2011--20122012

Data RepresentationData Representation ValueValue

RawRaw DataData CMSC199CMSC199

Encoding TableEncoding Table 6767--7777--8383--6767--4949--5757--5757

Quartenary Number SystemQuartenary Number System1003103111031010031031110310

0303010321032103030103210321

DNA Base SequenceDNA Base SequenceTAAGTAGTTTAGTATAAGTAGTTTAGTAAGAGATAGCTAGCTAGAGATAGCTAGCT

CompressedCompressed DNA SequenceDNA Sequence

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CMSC199 AB2 | 1CMSC199 AB2 | 1stst Semester A. Y. 2011Semester A. Y. 2011--20122012

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CMSC199 AB2 | 1CMSC199 AB2 | 1stst Semester A. Y. 2011Semester A. Y. 2011--20122012

If insertion size per cell is 1kb...

...then it would require 125 cell to store the image

[ Note: 1 gram of cells ~= 10 million cells ]

File Size

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CMSC199 AB2 | 1CMSC199 AB2 | 1stst Semester A. Y. 2011Semester A. Y. 2011--20122012

Data StorageData Storage WeightWeight (g)(g) Capacity (GB)Capacity (GB)

Seagate BarracudaSeagate Barracuda 680680 30003000

Seagate GoFlex SlimSeagate GoFlex Slim 159159 320320

OCZ Vertex 3 Series SSDOCZ Vertex 3 Series SSD 76.576.5 240240

E.E. ColiColi 11 900000900000

Source: http://reviews.cnet.com/best-storage-drives/

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