n.a digital repository that takes measures to extend or ensure the viability of its contentsOCLC/RLG 2004, 57For the purpose of this survey, a “digital preservation repository” (also called “preservation repository”) is any facility designed to store and safely preserve digital content for future use.UC3 2004For the past several months, CDL staff have been developing the core infrastructure for the UC Libraries Digital Preservation Repository, which will launch in 2005. The infrastructure consists of a set of services that support the long-term retention of digital objects for the benefit of the UC libraries, their affiliates (e.g., campus museums), and their users. The services and associated storage are based at the CDL.Caplan 2007, 306In consultation with the library directors, FCLA decided from the start that the preservation repository would be based on the emerging framework for Open Archival Information Systems (OAIS). It would be designed for long-term preservation (the initial horizon was 100 years) and limited to preservation functionality only.Caplan 2007, 310To date, most digital preservation repositories have focused on bit-level preservation–gathering content through harvesting or deposit, and managing content to ensure fixity, viability, and data integrity. Many repositories intend to add support for active preservation strategies based on migration or emulation sometime in the future.Lavoie 2014, 29In addition to providing a shared vocabulary for understanding, discussing, and supporting collaboration in digital preservation, the OAIS reference model also serves as something akin to a conceptual blueprint elucidating the fundamental components of a preservation repository, as well as the information objects the repository manages.Corrado and Moulaison Sandy 2017, 6–8Marieke Guy goes on to quantify three different lengths of digital preservation. They are long-term, medium-term, and short-term, and each has different requirements of a preservation repository.Pendergrass et al. 2019, 186Storage and verification costs are multiplied again in many preservation repositories through format migration at the time of ingest, which generates additional migrated preservation files stored alongside the original files in AIPs.
