Digital Preservation in the IU Libraries. Jon Dunn Stacy Kowalczyk. IU Digital Library Brown Bag Series September 17, 2008. Agenda. Overview of Digital Preservation Basics Preservation Strategies The OAIS Model The 4 Goals of Digital Preservation Digital Preservation in the IU Libraries
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IU Digital Library Brown Bag Series
September 17, 2008
Data will not be preserved by benign neglect.
“the managed activities necessary: 1) For the long-term maintenance of a byte stream (including metadata) sufficient to reproduce a suitable facsimile of the original document and 2) For the continued accessibility of the document contents through time and changing technology” (RLG & OCLC, 2002).
Requires an active, systematic program (Waters & Garrett, 1996.)
“The concept of representation format permeates all technical aspects of digital repository architecture and is, therefore, the foundation of many, if not all, digital preservation activities” (Abrams, 2004).
Persistent Identifier (PID)
Maintaining the intellectual wholeness of a digital object
Preservation System Models
Centrally-managed systems for storage (and delivery) of digital information
Leverage economies of scale for storage and management costs
Support preservation integrity functions (migration, replication, validation)
Much easier to manage than many little pockets of digital information
Potential single point of failureDigital Repositories
F Criteria and Checklistlexible Extensible Digital Object Repository Architecture
Open source digital repository software developed by Cornell and the University of Virginia
Supported by new organization: Fedora Commons
Basis for IU Digital Library Repository
Eventual backend for IUScholarWorks Repository and AIM as wellFedora
Master audio files
files on streaming server
Metadata records ondisk
Stanford-based peer-to-peer decentralized preservation infrastructure
Harvests Web content via crawling
Distributed copies compared against each other; damaged or incomplete copies are repaired automatically
CLOCKSS: Joint venture between libraries (including IU) and publishers to preserve e-journal content using LOCKSS technology
www.lockss.orgLOCKSS: Lots of Copies Keeps Stuff Safe
Also focused on archiving journal content infrastructure
Began as part of JSTOR
Supported by libraries (including IU), publishers, and Mellon
Publishers deposit content in PDF, XML, or SGML format