The Alliance for Permanent Access to the Records of Science Network has released the Report on Peer Review of Digital Repositories.
Here's an excerpt:
This document reports on the work which has been undertaken in support of the European Framework for Audit and Certification of Digital Repositories which was initiated by the European Commission's unit which funds APARSEN. . . .
The main part of this report provides details of the test audits which were carried out, the problems encountered and the lessons learned. The European repositories were the Deutsche Nationalbibliothek (DNB), Koninklijke Nederlandse Akademie van Wetenschappen Data Archiving and Networked Services (DANS), UK Data Archive (UKDA), Centre Informatique National de l'Enseignement Supérieur: Département Archivage et Diffusion (CINES-DAD) and in addition, in the USA, the Socioeconomic Data and Applications Center (SEDAC) at the Center for Earth Science Information, the National Space Science Data Center (NSSDC) and the Kentucky Department for Libraries and Archives (KDLA).