What is the average time to read or write a 512-byte sector for a typical disk rotating at 15,000 RPM? The advertised average seek time is 4 ms, the transfer rate is 100 MB/sec, and the controller overhead is 0.2 ms. Assume that the disk is idle so that there is no waiting time.

What is the average time to read or write a 512-byte sector for a typical disk rotating at 15,000 RPM? The advertised average seek time is 4 ms, the transfer rate is 100 MB/sec, and the controller overhead is 0.2 ms. Assume that the disk is idle so that there is no waiting time.

MIS

9th Edition

ISBN:9781337681919

Author:BIDGOLI

Publisher:BIDGOLI

Chapter2: Computers: The Machines Behind Computing

Section: Chapter Questions

Problem 6RD

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Concept explainers

Parallel and Distributed Storage

A parallel storage file system is a sort of clustered file system. A clustered file system is a storage system shared by multiple devices simultaneously.

Question

What is the average time to read or
write a 512-byte sector for a typical disk
rotating at 15,000 RPM? The advertised
average seek time is 4 ms, the transfer
rate is 100 MB/sec, and the controller
overhead is 0.2 ms. Assume that the disk
is idle so that there is no waiting time.

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