This presentation communicates the findings of a two-­‐year research project, University Institutional Repositories: Copyright and Long-­‐Term Preservation, that investigates the challenges presented to UIRs by the digital preservation of a multitude of content types, which may include preprints, postprints, electronic theses and dissertations, multimedia presentations, datasets and administrative records, all of which have differing requirements for digital preservation (the specific process of maintaining digital materials during and across different generations of technology over time, irrespective of where they reside).