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Long-Term Storage Services

At minimum, the Tufts Digital Library is intended to serve as a secure, managed repository for digital content of enduring value created at Tufts and/or by members of the Tufts community, its affiliates, and allied organizations. This minimum level of service is called Long-Term Storage Service (LTSS). LTSS provides a means to deposit digital material with an assurance that the data will be preserved and retrievable over time. This level of service requires a minimal level of administrative and descriptive metadata to enable management and retrieval by the owner of the object or their designee. At this level of service there is no assurance that the digital object (or content contained therein) will be usable once retrieved, only that it can be retrieved in the same state as at the time of deposit in the warehouse.

Core services include:

  • Secure long-term storage: Assets stored under the LTSS program are placed on secure network storage with regular backup protocols.
  • Management of digital assets: The DCA provides management of the assets to ensure that they are secured and retrievable.
  • Preservation policies and procedures: The DCA has developed procedures to enable bitstream preservation of objects deposited at this level of service
  • Discovery and retrieval: The DCA provides tools for depositors and their designees to locate and retrieve files they have placed in the repository.

Additional services include:

  • Development of access tools and interfaces.
  • Consultation on digital asset creation.

Objects deposited under LTSS are generally not expected to be discoverable or accessible through the TDL user interface, which requires that content conform to DCA requirements for format and metadata in order to ensure proper functioning in the TDL application. The DCA works with content creators interested in publishing their content through the TDL on issues of rights management, metadata creation, and object structure and format to achieve this goal. Creators of content types not currently supported by the TDL are encouraged to contact the DCA to schedule a consultation.

Content stored at this level of service is not necessarily retained permanently by the DCA, but is deposited in the repository for a time period defined by the terms of the submission agreement for each object or group of objects. These materials will be subject to periodic review by the DCA to determine proper retention. For materials determined to be archival, the DCA will work with content creators to bring the assets into compliance with the DCA’s technical requirements for archival management.

Archival Storage Services

At this level of service, digital objects will be managed and maintained as part of the DCA’s permanent collections. For objects with this level of service, the DCA makes the commitment to preserve the content of the object for permanent access and use. The rapidity of changing hardware, software, and file formats makes this an extraordinarily challenging task. In order to make digital preservation possible, the DCA requires that content be submitted in particular formats and with specific metadata requirements that are in compliance with national and international standards and best practices for digital preservation.

Core services include:

  • Secure long-term storage – all objects are stored on secure network storage with regular backup protocols.
  • Management of digital assets – the DCA manages all archival objects as part of its permanent collections.
  • Preservation policies and procedures – the DCA develops and enacts preservation policies and procedures as well as performing preservation actions as part of its collections management program.
  • Discovery and retrieval – the DCA provides tools for discovery and retrieval of archival objects in accordance with the access restrictions assigned to the objects.

Additional services include:

  • Development of access tools and interfaces.
  • Consultation on digital asset creation.

Collections accessioned into archival storage are first appraised as having permanent archival value by the DCA. Access to these materials can be provided through the TDL application, or may be made available through other applications developed to work with Fedora. Not all objects in archival storage will be made available through the TDL. The DCA provides data migration and preservation services for objects deposited at this level to ensure the functionality of the content into the future.

In order to meet this level of service digital objects must meet certain criteria:

  • Content must fit within the scope of the DCA collection policies.
  • Objects must be submitted in formats and adhere to digital content standards as outlined by the DCA. The DCA works with content creators to develop plans to bring content up to the level required to enable preservation including alternative formats, modification of the repository scope, and building of the appropriate applications or tools to facilitate the management and accessibility of the objects.
  • Metadata for each object must be submitted in compliance with the requirements of the DCA in terms of format, structure, and best practices for content.
  • In cases where materials and/or their accompanying metadata are of a type or format different from the DCA’s set standards, the DCA and AT will work with the content creators to determine a plan of action