Question: What is the average time to read or write a 256-byte sector for a typical disk rotating at 25,000 RPM? The advertised average seek time

What is the average time to read or write a 256-byte sector for a typical disk rotating at 25,000 RPM? The advertised average seek time is 14 ms, the transfer rate is 200 MB/sec, and the controller overhead is 0.5 ms. Assume that the disk is idle so that there is no waiting time.

What is Rotation per milli sec?

Calculate Transfer Time.

Calculate Average Access time.

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