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For preservation repositories (and to a lesser extent, access repositories) migration of data or content in a way that is lossless, transparent is necessary. Because fedora 3 has maintained a relatively simple, stable and complete serialization of objects (foxml), any tool or strategy with the primary concern of retaining all fedora 3 object data might be best served working from that serialization format.
Functionality Migration
Besides the data, fedora 3 (and 2) exposed functionality on objects through its dissemination framework, access control framework, embedded triplestore, coupled indexing framework and other mechanisms. Especially for access repositories, developing a path where this functionality can be retained is essential.
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