RAID-x: A New Distributed Disk Array for I/O-Centric Cluster Computing

  • Authors:
  • Kai Hwang;Hai Jin;Roy Ho

  • Affiliations:
  • -;-;-

  • Venue:
  • HPDC '00 Proceedings of the 9th IEEE International Symposium on High Performance Distributed Computing
  • Year:
  • 2000

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Abstract

A new RAID-x (redundant array of inexpensive disks at level x) architecture is presented for distributed I/O processing on a serverless cluster of computers. The RAID-x architecture is based on a new concept of orthogonal striping and mirroring (OSM) across all distributed disks in the cluster. The primary advantages of this OSM approach lie in: (1) a significant improvement in parallel I/O bandwidth, (2) hiding disk mirroring overhead in the background, and (3) greatly enhanced scalability and reliability in cluster computing applications. All claimed advantages are substantiated with benchmark performance results on the Trojans cluster built at USC in 1999. Throughout the paper, we discuss the issues of scalable I/O performance, enhanced system reliability, and striped checkpointing on distributed RAID-x in a serverless cluster environment.