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The accessibility of vital information can be enhanced by replicating the data on several sites and employing a consistency control protocol to manage the replicas. The reliability of a replicated data object depends on maintaining a viable set of current replicas. When storage is limited, it may not be feasible to simply replicate a data object at enough sites to achieve the desired level of r
several sites; consistency control protocol; replicated data object; replica maintenance; concurrency control; data integrity; distributed processing; performance evaluation; protocols.

K. Stewart, J. Carroll and D. Long, "Estimating the Reliability of Regeneration-Based Replica Control Protocols," in IEEE Transactions on Computers, vol. 38, no. , pp. 1691-1702, 1989.
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