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The LIFE Model Evolution: Insights & Future Directions

Explore the evolution of the LIFE Model from v1.0 to v2.0, addressing lifecycle elements, feedback sources, mapping with related standards, and key issues to resolve for efficient digital preservation management.

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The LIFE Model Evolution: Insights & Future Directions

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  1. The Life Model Paul Wheatley Digital Preservation Manager The British Library

  2. Summary and aims • Summary • Introduction to the LIFE Model and a recap of LIFE Model v1.0 • Development of the LIFE Model v1.1 • Looking ahead to LIFE Model v2.0 • Scope of lifecycle costs and aims of costing • LIFE Methodology • Generic Preservation Model • Future work: LIFE3? • Aims: • Summarise recent developments in the LIFE approach and costing tools • Provide a foundation for the Case Study discussions later today • Highlight some outstanding issues for discussion and debate

  3. Introducing the LIFE Model • Map of the digital lifecycle • Standard way of representing the key functions in a lifecycle • Mappings required from each unique lifecycle to the LIFE Model • Provides sufficient detail to enable useful analysis of lifecycles • Remains broadly high level to ensure relevance across different lifecycles and content types • Enables like with like comparison between different lifecycles

  4. LIFE Model v1.0 Lifecycle Stage Lifecycle Elements

  5. Reviewing and refining the Model • Feedback from a variety of sources: • Feedback from the LIFE1 Conference • Results of LIFE1 Case Studies • Feedback from third parties • Review by independent economics consultant • Mappings to related standards (OAIS, DRAMBORA, Cedars) • Internal review and production of LIFE Model v1.1 (Nov 07) • Further comment and feedback: • Feedback from LIFE2 Conference • Results of LIFE2 Case Studies • Feedback from third parties • Other lifecycle work (DCC Lifecycle Model, “Keeping Research Data Safe” JISC Study) • Production LIFE Model v2.0 (August 08)

  6. Acquisition Ingest Metadata Access Storage Preservation Creation or Purchase Acquisition Ingest Metadata Creation Bit-stream Preservation Content Preservation Access Developing the LIFE Stages LIFE Model V1.0 LIFE Model V1.1

  7. LIFE Model v1.1: Stages and Elements Lifecycle Stage Creation or Purchase Acquisition Ingest Metadata Creation Bit-stream Preservation Content Preservation Access Lifecycle Elements .... Selection Quality Assurance Re-use Existing Metadata Repository Admin Preservation Watch Access Provision .... Submission Agreement Deposit Metadata Creation Storage Provision Preservation Planning Access Control .... IPR & Licensing Holdings Update Metadata Extraction Refreshment Preservation Action User Support .... Ordering & Invoicing Reference Linking Backup Re-ingest Obtaining Inspection • Check-in

  8. LIFE Model v1.1: Sub-elements • Ensuring the Model is clear and unambiguous to apply: • Detailed definitions • Sub-element descriptions • Sub-elements are suggested functions or activities only

  9. Metadata Creation Re-use Existing Metadata Metadata Creation Metadata Extraction LIFE Model v1.1 to 2.0 – key issues to resolve Lifecycle Stage Creation or Purchase Acquisition Ingest Metadata Creation Bit-stream Preservation Content Preservation Access Lifecycle Elements .... Selection Quality Assurance Re-use Existing Metadata Repository Admin Preservation Watch Access Provision Scoping, Reqs, Repair .... Submission Agreement Scoping, Reqs, Repair Metadata Creation Storage Provision Preservation Planning Access Control .... IPR & Licensing Deposit Metadata Extraction Refreshment Preservation Action User Support .... Ordering & Invoicing Holdings Update Backup Re-ingest Disposal Obtaining Inspection Reference Linking Disposal • Check-in

  10. Scope: Lifecycle or none-Lifecycle cost? • LIFE1: concept implicit but not explicit • Lifecycle costs are directly related to functions applied to the content considered in a particular lifecycle. Eg: • Purchase of content • Deposit of content into a digital repository • Quality assurance of the content • Preservation action to migrate from one file format to another • Non-Lifecycle costs are supporting functions or miscellaneous costs not directly related to lifecycle activities. Eg: • Management • Repository software • Electricity costs • Buildings/accomodation costs • How do we define this scope?

  11. Aim of costing digital preservation activity • Assessment of the various practical aims or purposes of costing digital preservation activity • Assessment of the usefulness of costing approaches for each aim • Two key approaches considered: • Audit: a top down assessment of all infrastructure, staff and other costs associated with a digital repository. As demonstrated by the Dutch National Archives, Digitale Bewaring Project, http://www.digitaleduurzaamheid.nl/bibliotheek/docs/CoDPv1.pdf • Lifecycle Costing: a bottom-up lifecycle costing of activities relating to a particular content stream. As demonstrated by the LIFE Project, http://www.life.ac.uk • Results useful for: • informing adopters of where each approach will be useful • decision making on scope of lifecycle and non-lifecycle costs

  12. Costing approaches vs aims Useful approach Difficult to achieve aim with this approach Probable useful approach / some uncertainty / lack of evidence

  13. Methodology • A clearly defined step by step approach to costing a lifecycle • Provides guidance on how the LIFE Model should be applied • Standard approach to ensure consistency between studies of different lifecycles • Key aspects include: • Developing a process flow diagram • Mapping to the LIFE Model • Assessing function/activity costs • Scope of lifecycle and non-lifecycle costs • Assessing recurrent and non-recurrent costs • Generating estimates of future lifecycle costs • The Methodology will be published end of August 08

  14. Cost Estimation Tool Basic Content Profile Predicted Lifecycle Cost Organisational policy Generic Preservation Model • No data available to assess in LIFE1 Case Studies • Generic Preservation Model created to estimate the costs of Content Preservation • Review conducted to refine, fix known issues and incorporate feedback from LIFE1 Conference (May/June 08) • Review by experts group led by Chris Rusbridge • Generic Preservation Model V2.0 to be released at the end of the Project

  15. Looking ahead: “LIFE3”? Estimative models for each stage of the lifecycle Creation or Purchase Acquisition Ingest Metadata Creation Bit-stream Preservation Content Preservation Access

  16. Questions...? Paul Wheatley Digital Preservation Manager The British Library paul.wheatley@bl.uk www.life.ac.uk

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