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Using Dynamic Replication to Manage Service Availability in a Multimedia Server Cluster

  • Jonathan Dukes
  • Jeremy Jones
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3311)

Abstract

Dynamic replication policies assign non-disjoint subsets of multimedia presentations to nodes in a server cluster, replicating selected presentations to achieve load-balancing, while avoiding complete replication of the multimedia archive on every node. This paper presents a development of our existing Dynamic RePacking policy, which creates a configurable minimum number of replicas of selected presentations, increasing their availability. These additional replicas are assigned to nodes in a manner that allows load-balancing to be maintained when nodes fail. By separating replication to achieve load-balancing from replication to increase the availability of individual presentations, the trade-off between availability and storage cost can be controlled. This is illustrated by performance results from a prototype multimedia server cluster, which uses a group-communication service to implement inter-node communication.

Keywords

Node Failure Interarrival Time Multimedia Server Dynamic Replication Service Capacity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2004

Authors and Affiliations

  • Jonathan Dukes
    • 1
  • Jeremy Jones
    • 1
  1. 1.Department of Computer ScienceTrinity College DublinIreland

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