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Building a Standard-Based Digital Preservation Repository

Explore the implementation of PREMIS in Ex Libris's DigiTool and Digital Preservation System (DPS), ensuring the preservation of digital heritage collections in library environments. Learn about repository architecture, automation of PREMIS creation, agent entity support, and redundancy features.

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Building a Standard-Based Digital Preservation Repository

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  1. Implementing PREMIS in DigiTool Michael Kaplan ALA 2007 Update

  2. What is DigiTool? • A repository to collect, manage and preserve digital objects • Commercial solution • Based in library and academic environment

  3. Architecture • Based on the OAIS framework • The atomic unit in the repository is the file • The file reside in a METS like container (Digital Entity) • Clear separation between METADATA and streams • Relations managed via the repository

  4. DigiTool and PREMIS • Ability to add the following to Digital Entity: • Event entity • Object entity • Rights entity • Automatically created • Event entity – to record any change done to an object • Object entity – to record the URN

  5. Issues still open • Better automation of the PREMIS creation • Support for agents entity • Redundancy (PREMIS, METS, MIX and DC)

  6. What is the Ex Libris Digital Preservation System (DPS)? A world-leading digital archive capable of ensuring preservation and future access to the nation's digital heritage collections, designed for: • Large scales of objects • Different sources and formats • Workflows for legal deposit by different producers • Based on a proven repository architecture

  7. DPS Background • Endeavor (previously)/Ex Libris (now) and the NLNZ have been/are engaged in a partnership to develop an OAIS complaint digital preservation solution called Kronos • Ex Libris and NLNZ have agreed to design and develop a new technology platform that will become a commercial product • Endeavor (previously) and NLNZ established a Peer Review Group to insure the applicability of the solution to libraries in general

  8. Where we are • Ex Libris and NLNZ have signed off on plans to create the DPS • Defined requirements for a preservation system • Ex Libris has already developed core technology that • Is in line with Kronos architecture • Fulfills a significant portion of the requirements • Can support the additional development of additional required components and functionality

  9. SIP AIP DIP MD ORACLE ORACLE Staging storage area Deposit storage area Primo Architecture Preservation Management Publishing Permanent Repository Ingest/ Staging Repository Deposit Manual process Delivery Automated process Permanent storage area

  10. Goals • Build a digital preservation system that conforms to the OAIS reference module and the TDR requirements • Build a commercial viable solution that will address the needs of national libraries and preservation focused projects • Build a standard based accessible digital preservation repository

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