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Digital Preservation

Digital Preservation. ICDL-Contentra Workshop 29 th November 2013 raju.b@contentratechnologies.com. What Can You expect in this Presentation. An overview of Issues in long-term preservation of access to Digital Content Preserving Trust, Authenticity, Intelligibility, and Usability

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Digital Preservation

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  1. Digital Preservation ICDL-Contentra Workshop 29th November 2013 raju.b@contentratechnologies.com Contentra Technologies Confidential (RajuB)

  2. What Can You expect in this Presentation • An overview of • Issues in long-term preservation of access to Digital Content • Preserving Trust, Authenticity, Intelligibility, and Usability • Standards • Bit Preservation • Format Preservation • Metadata Preservation • Planning for Digital Preservation Programme • Q&A Contentra Technologies Confidential (RajuB)

  3. Fragility of Digital Content • Overly dependent on the Environment • Media or Carrier • Encoding or Format • Descriptive Information or Metadata • Rendering Environment • Knowledge Base of Designated Communities Contentra Technologies Confidential (RajuB)

  4. Issues in Preserving Long-term access • Planning Horizon is between 100 to 400 years • Technical and Non-technical issues • Technical Issues • Bit Preservation or Media Preservation • Encoding Preservation or Format Preservation • Metadata Preservation or Meaning & Context preservation • Rendering Environment or Viewing Environment • Characterizing the Designated Communities • Non-Technical Issues Contentra Technologies Confidential (RajuB)

  5. Non-Technical Issues in Preservation Contentra Technologies Confidential (RajuB) Source: Mike Kastellec “Practical limits to Scope of Digital Preservation”

  6. Technical Issues • Bit Preservation or Media Preservation • Risks Assessment • Media Obsolescence • Bit Rot • Loss-less migration • Encoding Preservation or Format Preservation • Containers & Content • Object Preservation & Set Preservation (Data sets/Fonds) Contentra Technologies Confidential (RajuB)

  7. Metadata Preservation • Structural Metadata • Administrative Metadata • Provenance Metadata • Rights Metadata • .. • Descriptive Metadata • Preservation Metadata Contentra Technologies Confidential (RajuB)

  8. OAIS Reference Model Contentra Technologies Confidential (RajuB)

  9. Establishing Trust • Ingest trustworthy information • Is through a clear transparent communication channel to the future society • Provenance, Respect du fonds, Chain of custody, Integrity • The channel should preserve itself • Realized through a set of: • Policies & Procedures • Auditable Systems & Services Contentra Technologies Confidential (RajuB)

  10. Attributes of TDR • Compliance to International Standards (such as OAIS-RM) • Administrative Responsibilities • Organizational Viability • Financial Sustainability • Technological and Procedural Suitability • Procedural Accountability Contentra Technologies Confidential (RajuB)

  11. Responsibilities of a TDR • Curational Responsibility • Operational Responsibilities • Ingestion of Resource & Metadata • Obtaining control over the information for lifecycle management • Rights, Validation of Metadata and Preservation Metadata, Unique Identification, Binding Metadata with resource, failsafe archival storage. • Access Provisioning • Compliance to policies • Discovery and Access service provisioning • Managing Producer/TDR and TDR/Designated community relationships Contentra Technologies Confidential (RajuB)

  12. Recommended Policies for TDRs • Collection Development Policies • Digital Rights and Digital Authorization Policies • Policies for storage • Service Provisioning Policies • System Change/Update control policies Contentra Technologies Confidential (RajuB)

  13. Types of Content • Digitized Content • Born Digital Content • Web • Social Network Feeds • Research Data • Survey Data Sets • Experimental/Empirical Data • Thesis and Dissertations Contentra Technologies Confidential (RajuB)

  14. Standards1 Source: http://www.dlib.indiana.edu/~jenlrile/metadatamap/seeingstandards.pdf Contentra Technologies Confidential (RajuB)

  15. Standards2 Source: http://www.dlib.indiana.edu/~jenlrile/metadatamap/seeingstandards.pdf Contentra Technologies Confidential (RajuB)

  16. Preservation Planning Contentra Technologies Confidential (RajuB)

  17. What might organisations need in terms of preservation services?

  18. Six step process for digital curation • Step 1: Develop Collection Development Policy and Repository services policy • Target user groups • Information use patterns • Step 2: Define the Service experience goals • Information Discovery Services • Rendering environment and Readability • Information Quality (integrity/comprehensive/reliable/fit-for-use) Contentra Technologies Confidential (RajuB)

  19. Six step process for digital curation (2) • Step 3: Identify information acquisition/curation processes • Information sources identification • Selection criteria and ingest mechanisms • Step 4: Discovery and Access mechanisms • Metadata & Navigational support for users to discover information • Access and Rendering environments Contentra Technologies Confidential (RajuB)

  20. Six step process for digital curation (3) • Step 5: Instrumentation for usage data • Step 6: Sustainability over a period of time • Resources & Funding • Maintenance of currency and value Contentra Technologies Confidential (RajuB)

  21. Levels of Digital Preservation (NDSA) Contentra Technologies Confidential (RajuB)

  22. Levels of Digital Preservation2 (NDSA) Contentra Technologies Confidential (RajuB)

  23. Levels of Digital Preservation3 (NDSA) Contentra Technologies Confidential (RajuB)

  24. Levels of Digital Preservation4 (NDSA) Contentra Technologies Confidential (RajuB)

  25. Advanced Considerations of Digital Preservation • Migration VS Emulations • Intelligibility Preservation • Modules and Dependencies • Designated Community Profiles • Usability • Re-use by Communities other than planned designated communities • Sustainability Contentra Technologies Confidential (RajuB)

  26. Questions Contentra Technologies Confidential (RajuB)

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