Method of aberration compensation in sapphire optical disks for the long term data storage

Abstract Current research on DNA storage usually focuses on the improvement of storage density with reduced gene synthesis cost by developing effective encoding and decoding schemes while lacking the consideration on the uncertainty in ultra long-term data storage and retention. Consequently, the current DNA storage systems are often not self-containment, implying that they have to resort to external tools for the restoration of the stored gene data. This may result in high risks in data loss since the required tools might not be available due to the high uncertainty in far future. To address this issue, we propose in this paper a self-contained DNA storage system that can make self-explanatory to its stored data without relying on any external tools. To this end, we design a specific DNA file format whereby a separate storage scheme is developed to reduce the data redundancy while an effective indexing is designed for random read operations to the stored data file. We verified through experimental data that the proposed self-contained and self-explanatory method can not only get rid of the reliance on external tools for data restoration but also minimize the data redundancy brought about when the amount of data to be stored reaches a certain scale.

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Long-term data storage in DNA

Trends in Biotechnology ◽

10.1016/s0167-7799(01)01671-7 ◽

2001 ◽

Vol 19 (7) ◽

pp. 247-250 ◽

Cited By ~ 67

Author(s):

Jonathan P.L Cox

Keyword(s):

Data Storage ◽

Term Data

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Hard-Copy Imaging Options

Microscopy Today ◽

10.1017/s155192950006627x ◽

1994 ◽

Vol 2 (5) ◽

pp. 14-14

Author(s):

Leonard Polizzotto

Keyword(s):

Data Storage ◽

Ease Of Use ◽

Hard Copy ◽

Photographic Film ◽

Ink Jet ◽

Microscope Images ◽

Microscopic Specimen ◽

Accurate Record ◽

Term Data

Photographic film has played a central role in the recording of microscope images since the invention of photography in the 1830s. Photography rapidly creates an accurate record of the microscopic specimen and avoids the subjectivity that was inherent in written and artistic descriptions of visual observations. Both instant and conventional films offer high resolution, the ability to record a large tonal gradation, and a stable media for long-term data storage.Newer techniques, such as thermal, ink jet, and laser prints, have grown in popularity because they offer ease-of-use or lower per-image cost. Despite recent improvements, none of these techniques offer the resolution or stability of a photograph. In general, people have been forced to sacrifice quality and permanence in order to achieve the lower per-image cost and ease-of-use promised by alternative recording systems.

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Islands as refuges for surviving global catastrophes

foresight ◽

10.1108/fs-04-2018-0031 ◽

2019 ◽

Vol 21 (1) ◽

pp. 100-117 ◽

Cited By ~ 3

Author(s):

Alexey Turchin ◽

Brian Patrick Green

Keyword(s):

Data Storage ◽

Design Methodology ◽

Easter Island ◽

Nuclear Submarine ◽

Content Type ◽

Low Level ◽

Horizon Scanning ◽

Different Types ◽

Term Data

Purpose Islands have long been discussed as refuges from global catastrophes; this paper will evaluate them systematically, discussing both the positives and negatives of islands as refuges. There are examples of isolated human communities surviving for thousands of years on places like Easter Island. Islands could provide protection against many low-level risks, notably including bio-risks. However, they are vulnerable to tsunamis, bird-transmitted diseases and other risks. This paper aims to explore how to use the advantages of islands for survival during global catastrophes. Design/methodology/approach Preliminary horizon scanning based on the application of the research principles established in the previous global catastrophic literature. Findings The large number of islands on Earth, and their diverse conditions, increase the chance that one of them will provide protection from a catastrophe. Additionally, this protection could be increased if an island was used as a base for a nuclear submarine refuge combined with underground bunkers and/or extremely long-term data storage. The requirements for survival on islands, their vulnerabilities and ways to mitigate and adapt to risks are explored. Several existing islands, suitable for the survival of different types of risk, timing and budgets, are examined. Islands suitable for different types of refuges and other island-like options that could also provide protection are also discussed. Originality/value The possible use of islands as refuges from social collapse and existential risks has not been previously examined systematically. This paper contributes to the expanding research on survival scenarios.

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Skew Estimation and Compensation in Tape Drives With Flangeless Rollers

ASME 2013 Conference on Information Storage and Processing Systems ◽

10.1115/isps2013-2924 ◽

2013 ◽

Author(s):

Kazuhiro Tsuruta ◽

Angeliki Pantazi ◽

Giovanni Cherubini ◽

Jens Jelitto

Keyword(s):

Growth Rate ◽

Data Storage ◽

Magnetic Tape ◽

Information Storage ◽

Annual Growth Rate ◽

Track Width ◽

Compound Annual Growth Rate ◽

Head Positioning ◽

Term Data

Magnetic tape remains the medium of choice for long-term data storage at the lowest possible cost. Moreover, tape-cartridge capacities are expected to maintain a compound annual growth rate of about 40%, resulting in a 128 TByte tape-cartridge capacity by 2022, as forecast by the Information Storage Industry Consortium (INSIC) roadmap [1]. To achieve these capacities in future tape products, the data track width has to be aggressively reduced through ultra-precise tape head positioning.

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