The Educopia Institute has released Comparative Analysis of Distributed Digital Preservation (DDP) Systems.
Here's an excerpt:
The National Endowment for the Humanities (NEH)-funded Chronicles in Preservation project (http://metaarchive.org/neh/) completed this Comparative Analysis of three Distributed Digital Preservation systems to analyze their underlying technologies and methodologies:
- Chronopolis using iRODS (http://chronopolis.sdsc.edu/).
- University of North Texas using Coda (http://www.library.unt.edu/).
- MetaArchive Cooperative using LOCKSS (http://metaarchive.org/).
Chronicles in Preservation is a three-year effort to study, document, and model techniques for the preservation of digital newspaper collections. This Comparative Analysis is based on a series of test exchanges between academic libraries curating digital newspaper collections and the three above- mentioned DDP systems.