Programme Overview 

This page will provide some insight into the National Library of New Zealand (external link) ’s digital preservation programme.

The goal of the programme is to enable the National Library of New Zealand to meet its mandate to collect, make accessible, and preserve in perpetuity, New Zealand’s digital heritage, as defined by the Library's collection policy (external link) .

National Digital Heritage Archive (NDHA)

Born digital and digitised items created or collected by the Library are held in the library’s digital preservation system, also referred to as the National Digital Heritage Archive (NDHA). The digital preservation system is responsible for long-term preservation of the object including maintaining enough descriptive metadata about the object to allow it to be discovered.

This year marks 10 years since the NDHA (National Digital Heritage Archive) was first launched in 2008. So here is a brief history of the programme.

In 2003, the National Library of New Zealand Act was passed providing the mandate for the Library to begin collecting and preserving New Zealand’s digital heritage in ways that will ensure current and future access. This resulted in the establishment of the National Library’s digital preservation programme.

In 2004 the Library launched its National Digital Heritage Archive (NDHA) project, the foundation for its digital preservation programme.  The NDHA programme was developed within the framework provided by NASA’s Open Archival Information System (OAIS) (external link) (external link)   reference model.

In 2006 the Library formed a development partnership with Ex Libris (external link) (external link) to build a digital archive and preservation management system and the resulting Rosetta digital preservation system was launched in October 2008.

10+ Years in Review

Looking back at some of the key milestones achieved by the NDHA programme since its launch.
Please click on the image below to view this as a PDF.NDHA Timeline [PDF, 417 KB]NDHA Timeline 2003 -2018

Digital Preservation Programme Today

To date, the archive holds approximately 21m files, spanning across 211 different formats and consisting of approximately 248 Terabytes.

The Library collects a wide range of digital material, such as websites, manuscripts, photographs, cartoons, annual reports and many digital publications. These items are actively collected under the National Library Act (2003) (external link) . The Library also receives public donations of digital material that are not published or available online . The Library has its own in-house image and sound digitisation programmes. Almost all of the collected digital and digitised materials are currently preserved in the digital preservation system.

Digital materials are collected through a number of methods and work on both active and passive collection modes. Library staff actively collect materials from publishers’ websites. Content providers can also send materials directly to the Library through email and other mechanisms. Staff then use a desktop application (INDIGO) to deposit content and associated and metadata to Rosetta. This is also the method used for digitised material.

The Web Curator Tool (WCT) is used for acquiring web material such as websites, web pages, and other documents on the internet.

Collection Management Systems

The Library uses systems ‘Tiaki’ (EMu) (external link) for unpublished and ‘Alma’ for published material for resource discovery and collection management. These collection management systems present links to resources held within the digital preservation system.

The collection management system is responsible for maintaining descriptive metadata and management information about objects within the digital preservation system.

The digital preservation system is responsible for managing the objects themselves from a technical perspective, ensuring that they are preserved and their integrity remains intact.

Preservation Functionality

The mandate of the Library is to actively preserve content. A full preservation programme is running with format migrations already undertaken on a number of different format types. The digital preservation system in use at the the Library features a full set of preservation functionality. The system is able to invoke various tools and utilities to support the preservation process, including:

  • Virus checker
  • Fixity
  • Metadata extraction
  • Format identification
  • Format validation
  • Format migration

Data Centres

The Library has its own dedicated data centre with discrete provision for the digital preservation programme. This is located outside of the Library and built to withstand one-in-hundred-year events.

Working as a Team

We are currently working with Archives New Zealand (external link) to support the preservation of the digital public records in line with the Public Records Act 2005 (external link) .

We are also working with external organisations nationwide in regard to third party hosting and the potential for a whole-of-country approach to digital preservation.

We are also involved in a number of international partnerships. To learn more about this go to the section Community Participation.




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