California Digital Library

DANS (Data Archiving and Networked Services), the Dutch scientific data archive for the social sciences and humanities is engaged in the MIXED project to develop open source software that implements the “smart migration” strategy concerning the long-term archiving of file formats. Smart migration concerns the conversion upon ingest of specific kinds of data formats, such as spreadsheets and databases, to an intermediate XML formatted file. It is assumed that the long-term curation of the XML files is much less problematic than the migration of binary source files and that the intermediate XML file can be converted in an efficient way to file formats that are common in the future. The features of the intermediate XML files are stored in the so-called SDFP schema (Standard Data Formats for Preservation). This XML schema can be considered as an umbrella as it contains existing formal descriptions of file formats developed by others. SDFP contains also a schemas developed by DANS, e.g. a schema for file oriented databases. It can be used e.g. for the binary "DataPerfect" format that was used on a large scale about twenty years ago and for which no existing XML schema could be found. The software developed in the MIXED project has been set up as a generic framework, together with a number of plug-ins. It can be considered as a repository of durable file format conversions. The MIXED project is at its ending phase and this paper contains an overview of the results.

In this paper, I consider whether virtual worlds are history in two senses of the word. The first explores the implications of the life-cycle of virtual worlds, especially of their extinction, for thinking about the history of computerbased technologies, as well as their use. The moment when a virtual world “is history” – when it shuts down – reminds us that every virtual world has a history. Histories of individual virtual worlds are inextricably bound up with the intellectual and cultural history of virtual world technologies and communities. The second sense of the virtual world as history brings us directly to issues of historical documentation, digital preservation and curation of virtual worlds. I consider what will remain of virtual worlds after they close down, either individually or perhaps even collectively.

Specimens of early computer systems stop working every day. One storage medium that was popular for home computers in the 1980s was the audio tape. The first home computer systems allowed the use of standard cassette players to record and replay data. Audio tapes are more durable than old home computers when properly stored. Devices playing this medium (i.e. tape recorders) can be found in working condition or can be repaired as they are made out of standard components. By re-engineering the format of the waveform the data on such media can then be extracted from a digitized audio stream. This work presents a case study of extracting data created on an early home computer system, the Philips G7400. Results show that with some error correction methods parts of the tapes are still readable, even without the original system. It also becomes clear, that it is easier to build solutions now when the original systems are still available.

This paper explores the purpose and development of best practice guidelines for the use of preservation metadata as detailed in the PREMIS Data Dictionary for Preservation Metadata within documents conforming to the Metadata Encoding and Transmission Standard (METS). METS is an XML schema that provides a container format integrating various forms of metadata with digital objects or links to digital objects. Because of the flexibility of METS to serve many different functions within digital systems and to support many different metadata structures, integration guidelines will facilitate common practices among institutions. There is constant tension between tighter control over the METS package to support object exchange versus each implementation's unique preservation metadata requirements given the different contexts and implementation models among PREMIS implementers. The PREMIS in METS Guidelines serve primarily as a standard for submission and dissemination information packages. This paper details the issues encountered in using the standards together, and how the METS document changes as events pertaining to the lifecycle of digital assets are recorded for future preservation purposes. The guidelines have enabled the implementation of an exchange format and creation/validation tools based on the PREMIS in METS guidelines.

The creation of most digital objects occurs solely in interactive graphical user interfaces which were available at the particular time period. Archiving and preservation organizations are posed with large amounts of such objects of various types. At some point they will need to, if possible, automatically process these to make them available to their users or convert them to a valid format. A substantial problem in creating an automated process is the availability of suitable tools. We are suggesting a new method, which uses an operating system and application independent interactive workflow for the migration of digital objects using an emulated environment. Success terms for the conception and functionality of emulation environments are therefore devised which should be applied to future long-term archiving methods.

In order better to meet the needs of its diverse University of California constituencies, the California Digital Library UC Curation Center is re-envisioning its approach to digital curation infrastructure by devolving function into a set of granular, independent, but interoperable micro-services. Since each of these services is small and self-contained, they are more easily developed, deployed, maintained, and enhanced; at the same time, complex curation function can emerge from the strategic combination of atomistic services. The emergent approach emphasizes the persistence of content rather than the systems in which that management occurs, thus the paradigmatic archival culture is not unduly coupled to any particular technological context. This results in a curation environment that is comprehensive in scope, yet flexible with regard to local policies and practices and sustainable despite the inevitability of disruptive change in technology and user expectation.

The Chronopolis Digital Preservation Initiative, one of the Library of Congress' latest efforts to collect and preserve atrisk digital information, has completed its first year of service as a multi-member partnership to meet the archival needs of a wide range of cultural and social domains. In this paper we will explore the major themes within Chronopolis.

nestor, the German network of expertise in digital preservation started as a time-limited project in 2003. Besides the establishment of a network of expertise with an information platform, working groups, and training opportunities, a central goal of the project phase was to prepare a sustainable organization model for the network's services. In July 2009, nestor transformed into a sustainable organization with 6 of the 7 project partners and 2 additional organizations entering into a consortium agreement. The preparation of the sustainable organization was a valuable experience for the project partners because vision and mission of the network were critically discussed and refined for the future organization. Some more aspects were identified that also need further refinement in order to make nestor fit for the future. These aspects shall be discussed in the paper.

TIPR, Towards Interoperable Preservation Repositories, is a project funded by the Institute of Museum and Library Services to create and test the Repository eXchange Package (RXP). The package will make it possible to transfer complex digital objects between dissimilar preservation repositories. For reasons of redundancy, succession planning and software migration, such repositories must be able to exchange copies of archival information packages with each other. Every different repository design, however, describes and structures its archival packages differently. Therefore each type produces dissemination packages that are rarely understandable or usable as submission packages by other repositories. The RXP is an answer to that mismatch. Other solutions for transferring packages between repositories focus either on transfers between repositories of the same type, such as DSpace-to-DSpace transfers, or on processes that translate a specific dissemination format into a specific submission package. Rather than build translators between many dissimilar repository types, the TIPR project has defined a standards-based package of metadata files that can act as an intermediary information package, the RXP, a lingua franca all repositories can read and write. In this paper we present the assumptions and principles underlying the TIPR concept of repository-to-repository exchange, and proceed to describe three aspects of the TIPR project: the RXP format itself; the tests we are conducting to prove and improve the use of the RXP; and finally, issues that have arisen in the course of the project so far.

Library and Archives Canada has a wide mandate to preserve and provide access to Canadian published heritage, records of national significance, as well as to acquire the records created by the Government of Canada, deemed to be of historical importance. To address this mandate, Library and Archives Canada has undertaken the development of a digital preservation infrastructure covering policy, standards and enterprise applications which will serve requirements for ingest, metadata management, preservation and access. The purpose of this paper is to focus on the efforts underway to engage digital recordkeeping activities in the Government of Canada and to influence and align those processes with LAC digital preservation requirements. The LAC strategy to implement preservation considerations early in the life cycle of the digital record is to establish a mandatory legislative and policy framework for recordkeeping in government. This includes a Directive on Recordkeeping, Core Digital Records Metadata Standard for archival records, Digital File Format Guidance, as well as Web 2.0 and Email Recordkeeping Guidelines. The expected success of these initiatives, and collaborative approach should provide a model for other digital heritage creators in Canada.