Comment on "Issues and Challenges in the Performance Analysis of Real Disk Arrays'

  • Authors:
  • Alexander Thomasian;Chang Liu

  • Affiliations:
  • IEEE;-

  • Venue:
  • IEEE Transactions on Parallel and Distributed Systems
  • Year:
  • 2005

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Abstract

We address an analysis of the SCAN disk scheduling, which approximates the mean seek distance as the ratio of maximum distance and disk_queue+1. We also comment on using the mean seek distance to estimate the mean disk response time.