Architectural choices in LOCKSS networks

The LOCKSS digital preservation technology collects, preserves and disseminates content in peer-to-peer networks. Many such networks are in use. The Global LOCKSS Network (GLN) is an open network with many nodes in which libraries preserve academic journals and books that they purchase. The CLOCKSS network is a closed network, managed by a non-profit consortium of publishers and libraries to form a dark archive of ejournal content. There are also many Private LOCKSS Networks (PLNs) preserving various genres of content. Each of these networks is configured to meet the specific requirements of its community and the content it preserves. This paper describes these architectural choices and discusses a development that could enable other configurations.