An Archival Repository reliably stores digital objects for long periods of time (decades or centuries). The archival nature of the system requires new techniques for storing, indexing, and replicating digital objects. In this paper we discuss the specialized indexing needs of a write-once archive. We also present a reliability algorithm for effectively replicating sets of related objects. We describe an administrative user interface and a data import utility for archival repositories. Finally, we discuss and evaluate a prototype repository we have built, the Stanford Archival Vault, SAV. KEYWORDS: archival storage, digital objects, object replication, object indexing, user interface, archival repository 1 INTRODUCTION Information stored and managed by today's digital libraries can be lost within years or decades if special care is not taken. The causes include media and system failures, format obsolescence and bankruptcy of publishers. At Stanford we have implemented a prototype arc..
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