Disk load balancing for video-on-demand systems

  • Authors:
  • Joel L. Wolf;Philip S. Yu;Hadas Shachnai

  • Affiliations:
  • -;-;-

  • Venue:
  • Multimedia Systems
  • Year:
  • 1997

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Abstract

For a video-on-demand computer system, we propose a scheme which balances the load on the disks, therebyhelping to solve a performance problem crucial to achievingmaximal video throughput. Our load-balancing scheme consists of two components. The static component determinesgood assignments of videos to groups of striped disks. Thedynamic component uses these assignments, and features a"DASD dancing" algorithm which performs real-time diskscheduling in an effective manner. Our scheme works synergistically with disk striping. We examine the performanceof the proposed algorithm via simulation experiments.