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 a
data import utility for archival repositories. Finally, we discuss and
evaluate a prototype repository we have built, the Stanford Archival
Vault (SAV).