This paper describes archiving strategies for append-only temporal databases. We present a storage architecture where optical disks work in tandem with magnetic disks. Magnetic disks are used for storing current versions and recent past versions, whereas optical disks are dedicated for archiving older past versions. Similarly, temporal access structures are stored on both magnetic and optical d...

Curated databases represent a substantial amount of effort by a dedicated group of people to produce a definitive description of some subject area. The value of curated databases lies in the quality of the data that has been manually collected, corrected, and annotated by human curators. Many curated databases are continuously modified and new releases being published on the Web. Given that cur...

This paper discusses archive data and its specific attributes, as well as the requirements for storing, cataloging, managing, and retrieving archive data. We discuss how MAID (Massive Array of Idle Disks), and particularly our enhanced implementation of MAID, are particularly well suited for the storage of long-term archive data. Finally, we present an overview of the Revolution 220A file archi...

The ECHO DEPository (also known as ECHO DEP, an abbreviation for Exploring Collaborations to Harvest Objects in a Digital Environment for Preservation) is an NDIIPP-partner project led by the University of Illinois at Urbana-Champaign in collaboration with OCLC and a consortium of partners, including five state libraries and archives. A core deliverable of the project’s first phase was OCLC’s d...

Data backup and archiving is an important aspect of business processes to avoid loss due to system failures and natural calamities. As the amount of data and applications grow in number, concerns regarding cost efficient data preservation force organizations to scout for inexpensive storage options. Addressing these concerns, we present Tape Cloud, a novel, highly cost effective, unified storag...

Web archiving services play an increasingly important role in today’s information ecosystem, by ensuring the continuing availability of information, or by deliberately caching content that might get deleted or removed. Among these, the Wayback Machine has been proactively archiving, since 2001, versions of a large number of Web pages, while newer services like archive.is allow users to create o...

Introduction. This paper analyses the work practices and perspectives of professionals working with archaeological archives and the social organization of archaeological archiving and information management in Sweden. Method. The paper is based on an interview study of Swedish actors in the field of archaeological archiving (N=16). Analysis. The interviews were recorded and transcribed, then an...

This paper reports on the results of an analysis of 80 copyright transfer agreements (CTAs) with particular regard to their effect on author self-archiving. It shows the number of CTAs asking for copyright assignment, the time of assignment and what happens when copyright cannot be assigned. It outlines the warranties required of the author, and the exceptions granted back to the author by whic...

Social web analysis is all about the users who are actively engaged and generate content. This content is dynamic, reflecting the societal and sentimental fluctuations of the authors as well as the ever-changing use of language. Social networks are pools of a wide range of articulation methods, from simple ”Like” buttons to complete articles, their content representing the diversity of opinions...

We examine the dependence of information stability on certain medium parameters, namely mean Curie temperature, grain height, and anisotropy constant ratio in 4 Tbpsi heat-assisted magnetic recording, for 10 years archiving. introduce a minimum normalized readout field H0 after archiving an degradation rate R0 during To interpret results, we investigate whether there is correlation between or e...