Efficient Failure Recovery in Multi-Disk Multimedia Servers

  • Authors:
  • Harrick M. Vin;Prashant J. Shenoy;Sriram Rao

  • Affiliations:
  • -;-;-

  • Venue:
  • FTCS '95 Proceedings of the Twenty-Fifth International Symposium on Fault-Tolerant Computing
  • Year:
  • 1995

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Abstract

In this paper, we present a novel disk failure recovery method that utilizes the inherent redundancy in video streams (rather than error-correcting codes) to ensure that the user-invoked on-the-fly failure recovery process does not impose any additional load on the disk array. We also present a disk array architecture that enhances the scalability of multimedia servers by: (1) integrating the recovery process with the decompression of video streams, and thereby distributing the reconstruction process across the clients; and (2) supporting graceful degradation in the quality of recovered images with increase in the number of disk failures.