Lynch, Kate
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Publication Defensive Design: Developing a System-Agnostic Repository for Sustainable Long-Term Preservation(2018-06-04) Lynch, Kate; Morton-Owens, EmilyColenda, the University of Pennsylvania Libraries’ digital repository, was designed to promote longterm preservation. Its infrastructure is comprised of components selected to concentrate on factors that are of the most importance and that pose the greatest risks for long-term preservation of digital assets: safe file storage, the ability to track changes to objects over time, mechanisms for object management and discoverability, and migration paths that guarantee that objects can be safely migrated to new software and new versions of existing systems while preventing data loss. Favoring a pluggable architecture and preservation of software-agnostic representations of objects in order to keep future repository development plans flexible and open, our approach minimizes the risk of data loss in the long term and has allowed us to design a system in which the right tools for the task are always an option. In this paper, we will enumerate the risks/concerns influencing our design decisions and show how our approach addresses them while retaining a connection to the central open-source projects of the community, Fedora and Samvera, that make up significant portions of our stack.Publication Uncomplicating the business of repositories(2019-06-11) Lynch, Kate; Morton-Owens, EmilyIn this presentation, we discuss how our library runs our repository in production to meet the needs of our “business” as efficiently as possible. We have an interest in limiting the number of digital platforms we manage, for the purposes of sustainability and efficiency, but we must also consider how well a general platform can meet specific user needs. A governance group of administrators, in conference with stakeholders and developers, seeks to find the best way to accommodate each collection or functional need, with an eye to minimizing technical complexity, offering stakeholders self-serve options when possible, and maintaining a single canonical copy of each object. We will present some case studies of how material has been handled in our developing digital ecosystem, where preservation and access sometimes present conflicting priorities. We are exploring how our repository can best evolve to support our aims of making data and documents freely available.Publication Colenda @ the University of Pennsylvania: Using a decoupled, pluggable architecture for object processing(2018-09-10) Lynch, KateThis poster details the architecture of the repository and the deliverables of the first major release of Colenda, the open-source repository software developed at Penn Libraries. Staff in Digital Library Development & Systems created Colenda, a long-term preservation ecosystem including Samvera, an open-source software framework for repository development, at its core. Colenda is a Samvera instance that provides materials-agnostic fuThis poster details the architecture of the repository and the deliverables of the first major release of Colenda, the open-source repository software developed at Penn Libraries. Staff in Digital Library Development & Systems created Colenda, a long-term preservation ecosystem including Samvera, an open-source software framework for repository development, at its core. Colenda is a Samvera instance that provides materials-agnostic functionality for distributed workflows around administration of digital assets and metadata through a pluggable architecture for metadata schemata and entry. This poster offers a look at object processing workflows from the consumer end as well as a deep-dive into each component's purpose in the software stack.