A presentation on the ways in which digital preservation capability is being embedded within Hydra, given at the 2016 Spring meeting of the international Preservation and Archiving Special Interest Group

1. Infusing Hydra with
digital preservation
capabilities
Options and Directions
Chris Awre
Head of Information Services, University of Hull
Hydra Steering Group
PASIG, Prague, 11th March 2016

2. Hydra
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Repository
solutionsCommunity-driven
Open source
Technical
framework

3. Fundamental Assumption #1
No single system can provide the full range of repository-
based solutions for a given institution’s needs,
…yet sustainable solutions require a
common repository infrastructure.
No single institution can resource the development of a full
range of solutions on its own,
…yet each needs the flexibility to tailor
solutions to local demands and workflows.
Fundamental Assumption #2
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4. Fedora and Hydra
Storage
Fedora
Hydra
Hydra provides user interfaces and workflows
over the repository – a complete solution
Concept of multiple Hydra ‘heads’ over single
body of content
Hydra
Hydra Hydra
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The content is stored either locally or in
the Cloud
Fedora is the digital repository system,
holding the content in a structured way

5. A Worldwide Presence
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6. Hydra Heads of Note
Avalon & HydraDAM for Media
Sufia
BPL Digital Commonwealth
UCSD DAMS
See a full list at:
https://wiki.duraspace.org/display/hydra/
Partners+and+Implementations
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7. Hydra and digital preservation
• Hydra Digital Preservation Interest Group
• Linking Hydra to digital preservation tools/services
– Archivematica
– Archivesphere
• Embedding preservation metadata within Hydra
– Expanding PCDM
– Making sense of Premis
• Hydra as component of digital preservation infrastructure
– Royal Library of Denmark
– LSE
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8. Hydra and Archivematica
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9. Archivesphere
• A project from Penn State University to extend their
Scholarsphere/Sufia Hydra head to include preservation
actions
– Format migration
– Embedded FITS
• Dilemma of what to include and what not to include
– Don’t want to re-invent the wheel
• Hydra DP Interest Group project on preservation actions
– Identifying what may best sit within Hydra and what best
sits elsewhere
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10. Using PCDM to capture digital preservation
• PCDM – Portland Common Data Model
– Common way to structure digital objects in a repository
– How can this be expanded to include digital preservation
information?
– Hydra DP Interest Group project to identify how to extend
PCDM for digital preservation
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11. Making sense of Premis
• How can Hydra make effective use of Premis data
dictionary?
• Hydra DP Interest Group project exploring options
– Building on experience to date from across the Hydra
community
– Focus on practical mechanisms, not assessing which parts
of Premis should or should not be used
• Initial interest in Premis events
• Interest in Premis OWL ontology given Fedora 4 use of RDF
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12. Royal Library preservation infrastructure
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13. LSE – digital preservation at institutional level
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14. In summary
• Hydra has the flexibility to embed digital preservation
capabilities in a number of ways
• Community is in the process of finding its way with
identifying best practice
– Building on lots of local experience and initial
implementations
– Extending community initiatives, not re-inventing the
wheel
• Building on and enabling Fedora’s underlying support of
durability
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15. Thank you
Questions?
c.awre@hull.ac.uk
http://projecthydra.org

16. Links
• Fedora
– http://fedorarepository.org/
• Avalon
– http://www.avalonmediasystem.org
• Sufia example (Penn State Scholarsphere)
– https://scholarsphere.psu.edu/
• University of California San Diego digital collections (including
datasets)
– http://library.ucsd.edu/dc/
• Boston Public Library
– https://www.digitalcommonwealth.org/
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17. Links 2
• Hydra and Archivematica
– https://www.york.ac.uk/borthwick/projects/archivematica/
• Archivesphere
– https://github.com/psu-stewardship/archivesphere
• PCDM
– https://github.com/duraspace/pcdm/wiki
• Royal Library
– https://wiki.duraspace.org/download/attachments/68060688
/Digital%20preservation%2C%20LSE%2020150423.pptx?vers
ion=1&modificationDate=1430382021721&api=v2
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