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ERIC Number: ED459841
Record Type: Non-Journal
Publication Date: 2001-Jun
Pages: 11
Abstractor: N/A
Reference Count: N/A
Creating Trading Networks of Digital Archives.
Cooper, Brian; Garcia-Molina, Hector
Digital materials are vulnerable to a number of different kinds of failures, including decay of the digital media, loss due to hackers and viruses, accidental deletions, natural disasters, and bankruptcy of the institution holding the collection. Digital archives can best survive failures if they have made several copies of their collections at remote sites. This paper discusses how autonomous sites can cooperate to provide preservation by trading data. The paper examines the decision that an archive must make when forming trading networks, such as the amount of storage space to provide and the best number of partner sites. Also dealt with is the fact that some sites may be more reliable than others. Experimental results from a data trading simulator illustrate which policies are most reliable. The techniques focus on preserving the "bits" of digital collections; other services that focus on other archiving concerns (such as preserving meaningful metadata) can be built on top of the system described in this paper. (Contains 27 references.) (Author/AEF)
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Publication Type: Numerical/Quantitative Data; Reports - Research; Speeches/Meeting Papers
Education Level: N/A
Audience: N/A
Language: English
Sponsor: National Science Foundation, Arlington, VA.
Authoring Institution: N/A