Andrea Fojtu

Charles University in Prague, National Library of the CR

What are we going to talk What are we going to talk about…about…

Long-term preservation of DD Long-term preservation of DD (LTPoDD)(LTPoDD)Long-term preservation: Long-term preservation:

Anglo-American resources: digital preservation, (long-term) preservation of digital objects or digital curation

The importance of the digital preservation may be corroborated by a Rothenberg’s famous saying: “the digital information lasts forever or five years,   whichever comes first”

OAIS reference modelOAIS reference model

conceptual, terminological conceptual, terminological framework:framework:

Open Archival Information System Reference ModelISO 14721:2003model –> it is possible to adapt the repository to the specific needs and challengesprerequisite to a trustworthy repository“an archive, consisting of an organization of people and systems that has accepted the responsibility to preserve information and make it available for a designated community [...] and for long enough to be concerned with the impacts of changing technologies, including support for new media and data formats, or with a changing user community” .

modules:modules:

producer – individual vs. organizational

SIP (submission information package)

ingest = import (single vs. bulk)

data management archival storage AIP (archival information

package) administration access DIP (dissemination information

package) preservation planning

State-of-the-ArtState-of-the-Art

JISC survey :JISC survey :

March 2009

SW: CONTENTdm, Digital Commons , DigiTool, DSpace, Eprints, EQUELLA, Fedora, intraLibrary, Open Repository, VITAL, Zentity

study: functionalities of today’s available open-source and commercial systems is very even

how about DODD?

Criteria:Criteria:

supported formats thumbnails user interface functions advance search browsing classification/subject

headings user authentication statistics SW platforms, OS,

scripting languages metadata interoperability

Repository Software Survey [online]. JISC RepositoryNet, March 2009 [cit. 2009-04-05]. Available at: <http://www.rsp.ac.uk/software/surveyresults>.

Comparison & resultsComparison & results

CriteriaCriteria::

OAIS model implementation

a wide range of supported formats

open architecture for other applications and plug-ins

internal tools for format change (e.g. emulation, migration)

SW and/or HW (in)dependence

administrator’s functions services

Repositories:Repositories:

open-source SW: DSpace, Fedora,

EPrints and Research-Output Repository Platform

commercial SW: CONTENTdm,

Digital Commons, Digitool, Equella, intraLibrary, Open Repository, Vital

three relatively “new” systems:

Dias, SDB, Rosetta

Comparison & results #2Comparison & results #2

OAIS model implementation

a wide range of supported formats

open architecture for other applications and plug-ins

internal tools for format change (e.g. emulation, migration)

SW and/or HW (in)dependence

administrator’s functions services

Repozitáře:Repozitáře:

open-source SW: Fedora OAIS model

implementation, METS, not PREMIS, open standard, OS, HW independence; dependence on PC – Midrange server, SIP as a “compound digital object”, nonexistence of migration and emulation tools, indexing for full-text search

not known: limited number of DD, limits for (a bulk) ingest, ingest scheduler, versioning of digital documents, statistics, support in CZ

Comparison & results #3Comparison & results #3

OAIS model implementation

a wide range of supported formats

open architecture for other applications and plug-ins

internal tools for format change (e.g. emulation, migration)

SW and/or HW (in)dependence

administrator’s functions services

RepositoriesRepositories

commercial SW: IBM DIAS system is named in many

ways(implemented according to the needs of an institution), not much information, missing METS, PREMIS, not an open standard, OS, SW platforms dependence; SIP as a stream package (not more than 5 thousand files in one SIP), no ingest scheduler, missing ingest scheduler, web archiving, support in CZ

not known: OAIS, HW dependence questionable, limits for (a bulk) ingest, statistics

Comparison & results #4Comparison & results #4

OAIS model implementation

a wide range of supported formats

open architecture for other applications and plug-ins

internal tools for format change (e.g. emulation, migration)

SW and/or HW (in)dependence

administrator’s functions services

Repositories:Repositories:

commercial SW: Tessella SDB OAIS support, METS

(possible to export), PREMIS, open standard, OS, SW, HW platform independence; SIP as a logical entity, versioning of digital objects, ingest scheduler, web archiving, statistics, indexing for full-text search, browsing, support in CZ, no limit for (a bulk) ingest

Comparison & results #5Comparison & results #5

OAIS model implementation

a wide range of supported formats

open architecture for other applications and plug-ins

internal tools for format change (e.g. emulation, migration)

SW and/or HW (in)dependence

administrator’s functions services

Repositories:Repositories:

commercial SW: Ex Libris Rosetta OAIS support, METS

(possible to export), PREMIS, open standard, OS, SW, HW platform independence; SIP as a logical entity, versioning of digital objects, ingest scheduler, web archiving, statistics, indexing for full-text search, browsing, support in CZ, no limit for (a bulk) ingest

ConclusionsConclusions

Reality check:Reality check:

theoretical comparison (based on search in presentations, articles, papers on the Internet) is very complicated and partially misrepresenting

there will be at least one SW solution perfectly suitable for the LTPoDD open-source and commercial

YES and NO

not a single repository complies to the chosen criteria YES

open source solution - better performance of open source systems because of a widespread developer and user community NO

PostulatesPostulates::

there will be at least one SW solution perfectly suitable for the LTPoDD

open-source and commercial

not a single repository complies to the chosen criteriaopen source solution - better performance of open source systems because of a widespread developer and user community

Reasons: LTPoDD is still in its infancy, SW is not a redemption!