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Darkive: A term used in some DPN materials as a short form of ‘dark archive’.
Deaccession: The process by which DPN permanently removes deposited objects from the DPN federation. Deaccessioned objects are no longer accessible or recoverable from the DPN nodes.
DPN Charter Member: An institution or organization contributing financially to establish and support DPN prior to June 30, 2013 (current members). Initial DPN Depositors must all be Charter Members.
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Package: Organizing and grouping content into discrete units, particularly for storage and data transfer. DPN will be using Bags as an organizational unit. (See "Bag" above.)
Recovery: (See ‘Restoration’ and ‘Administrative Restoration.’)
In the DPN context, recovery applies to two contexts:
- an Ingest Node loses a copy of its own content, or determines that it is partially or fully corrupt.
- a Replication Node loses its copy of content held for an Ingest Node, or determines that it is partially of fully corrupt.
Registry: DPN will maintain a registry of replicated content to allow management of Digital Objects in the DPN network. It will track the identity, source, location of copies, previous version, legal agreements, and fixity of content in DPN.
Release candidate: A release candidate is a beta version with potential to be a final product, which is ready to release unless significant bugs emerge.
In this stage of product stabilization, all product features have been designed, coded and tested through one or more beta cycles with no known showstopper-class bug. There could still be source code changes to fix defects, changes to documentation and data files, and peripheral code for test cases or utilities.
Replicating Node: DPN will replicate the content from the Ingest Node (see above) to other DPN Nodes, known as Replicating Nodes. Content in Replicating Nodes will be held “dark”, and inaccessible except for preservation actions.
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SLA: Service Level Agreement. A contract between a service provider (DPN or Node) and the service consumer (DPN or Member) that defines the level of service expected from the service provider. SLAs are output-based in that their purpose is specifically to define what the customer will receive. They commonly include a definition of: services, performance measurement, problem management, customer duties, warranties, disaster recovery, and provisions for termination of agreement.
Soft Launch: The release of a service to a limited audience. Soft-launching is a method for gathering data on a product's usage and acceptance before making it generally available. DPN is choosing a soft launch to test the operation and fine-tune functionality before a full production release.
Succession: The planned and documented transfer of content from the original steward to another steward. As a preservation network for the academy and by the academy, content preserved in DPN will be covered by succession rights that will allow the content to be used in the future by the academy after the dissolution of the source of the content. The current model for succession is via “Quit Claim”.
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