The Syracuse University Libraries’ Digital Library stewards locally produced digital content by coordinating and managing the technical activities and infrastructure that produce, describe, manage, and preserve this content. It also supports research, teaching, and learning by facilitating access to content from program participants and partners while encouraging creative engagement and use.
The above diagram is an abstract model of the digital library infrastructure employed at Syracuse University Libraries. As such, it demonstrates the digital activities and workflows in a general sense, but may not account for specific use cases and collections.
Beginning at the center, the model identifies two areas of digital library content producton. First, it acknowledges the image production that takes place in the Libraries Digital Production Unit; audio production that takes place in Belfer Labs; and other, multi-media content that may be digitized by vendors. In addition, the production block includes content added to the institutional repository (SURFACE, more below), including electronic theses and dissertations (imported from ProQuest via the university's records management system, OnBase) and other scholarly content created by faculty, staff, and students. Finally, web archive files or WARCs are identified as a production area, though this activity does not take place within the Libraries, it is simply managed and preserved by a third-party tool: Archive-it.
Moving to the right, the model identifies the different systems the Libraries use to manage its digital assets. Quartex is the primary digital asset manager. It stores all the descriptive, administrative, and technical metadata (excluding certain metadata recorded only for digital preservation). It also stores access files for all the Libraries digitized objects and drives access to published collections. Content specialists also use this platform to access unpublished, digitized materials for reference and teaching purposes.
The Libraries custom instance of Kaltura holds all the audio-visual access files, though these are run through Quartex for end-user access.
DigitalCommons powers the institutional repository and open scholarship services at the Libraries.
Moving to the right again, the model shows how end-user access is accomplished in the digital library infrastructure. Most published collections managed in Quartex and Kaltura are made available through the Syracuse University Libraries Digital Collections portal. Our institutional repository, SURFACE, provides access to digital objects created in the course of scholarly production on the Syracuse University campus.
Returning to center and moving left from production, the model outlines digital preservaton activity taking place in two distinct spheres. First, the Libraries uses Preservica for its internally managed digital preservation activity and master file management. Objects stored in the institiutional repository are preserved in a LOCKSS environment, managed by the vendor.
Moving left one last time, the model identifies the current storage environment for master files which consists of a combination of LTO Tape and spinning disk. The Libraries are still doing work to resolve the need for external redundancies for storage.