An interesting post on the JISC Repositories list on 21st March highlights a survey being undertaken by the University of Michigan looking at the relationship between data archives and institutional repositories. Their 10 minutes survey is available here for any that wish to contribute.
The poster also mentions a draft 12 page guide (available on Scribd, but easier to read as a Google doc) which is interesting and useful about building links between social science data archives and institutional repositories ” . . . that provides guidelines and decision rules for institutional repositories at each stage of the archiving process: from appraisal to acquisition to curation to dissemination. ”