Cluster-Aware cache for network attached storage

Authors:
Bin Cai;Changsheng Xie;Qiang Cao
Affiliations:
National Storage System Laboratory, Department of Computer Science, Huazhong University of Science and Technology, Wuhan, P.R. China;National Storage System Laboratory, Department of Computer Science, Huazhong University of Science and Technology, Wuhan, P.R. China;National Storage System Laboratory, Department of Computer Science, Huazhong University of Science and Technology, Wuhan, P.R. China
Venue:
NPC'05 Proceedings of the 2005 IFIP international conference on Network and Parallel Computing
Year:
2005

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Abstract

Decentralized, cooperative and large-scale distributed storage systems that consist of a cluster of storage nodes attached with local disks can deliver high resource utilization, high availability and easy scalability. This paper describes the design and prototype implementation of a novel Cluster-Aware Cache (CAC) algorithm that shares memories between nodes in cluster to construct an efficient and cooperative cache-to-disk accesses policy. The difference between our scheme and previous studies is that processes on different node can access the same page concurrently. Furthermore, CAC algorithm is also well suited to heterogeneous clusters where one or more nodes may have larger amounts of memory than the others. The performance measurements with a Web server on our system show dramatic performance improvements with increasing number of nodes.