Archeology data refers to the art and science of computer data recovery encoded and/or encrypted in outdated media or formats. Archaeological data may also refer to the restoration of information from defective electronic formats after a natural or man-made disaster.
The term originally appeared in 1993 as part of the Global Oceanographic Data Archeology and Rescue Project (GODAR). The original impetus for archaeological data stems from the need to recover computerized records of climatic conditions stored on old computer tapes, which can provide valuable evidence for testing climate change theories. This approach enabled the reconstruction of the Arctic imagery that had been captured by the Nimbus 2 satellite on September 23, 1966, in a higher resolution than never before seen from this type of data.
NASA also makes use of archaeologist data services to recover information stored in the 1960s vintage computer recordings, as exemplified by the Lunar Orbiter Image Recovery Project (LOIRP).
Video Data archaeology
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It is also important to make a difference in archaeological data between data recovery, and data clarity. You may be able to recover data, but not understand it. In order for the archaeological data to be effective, the data must be understandable.
Disaster recovery
Archaeologist data can also use data recovery after natural disasters such as fires, floods, earthquakes, or even hurricanes. For example, in 1995 during Hurricane Marilyn Lab National Media assisted the National Archives and Archives Administration in recovering data at risk due to faulty equipment. Hardware is damaged by rain, salt water and sand, but it is possible to clean some disks and repair them with new cases to save data on them.
Recovery techniques
When deciding whether or not to try and recover the data, the cost should be taken into account. If there is enough time and money, most of the data will be recoverable. In the case of magnetic media, which is the most commonly used type for data storage, there are various techniques that can be used to recover data depending on the type of damage.
Humidity can cause the tape to become unusable as it begins to get worse and become sticky. In this case, heat treatment can be applied to correct this problem, by causing both oil and residue to be absorbed back into the tape or evaporating from the tape surface. However, this should only be done to provide access to the data so it can be extracted and copied to a more stable medium.
The loss of lubrication is another source of ribbon damage. This is most often caused by heavy use, but can also be caused by improper storage or natural evaporation. As a result of heavy use, some lubricants can remain on the read-write head which then collects dust and particles. This can cause damage to the tape. Lack of lubrication can be overcome by re-lubricating the tape. This should be done with caution, since excessive lubrication can lead to cassette slippage, which in turn can lead to media misread and loss of data.
Exposure to water will damage the tape from time to time. This often happens in disaster situations. If the media is in salt or dirty water, it should be rinsed in fresh water. The cleaning, rinsing, and drying of the wet tape should be done at room temperature to prevent heat damage. Older bands should be recovered before newer tapes, as they are more susceptible to water damage.
Maps Data archaeology
Prevention
To prevent the need for archaeological data, the creators and holders of digital documents must be careful to use digital preservation.
See also
- Slightly rotted
- Data curation
- Data preservation
- Digital dark age
- Digital preservation
- Knowledge discovery
References
- World Wide Words: Archaeological Data
- O'Donnell, James Joseph. Avatar Words: From Papyrus to Cyperspace Harvard University Press, 1998.
- Ross, Seamus & amp; Gow, Ann (1999). Digital archeology: saving degraded and damaged data sources (PDF) . Study electronic library program. London & amp; Bristol: British Library and the Joint Information Systems Committee. ISBN: 1-90050-851-6. Ã,
Source of the article : Wikipedia
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