We are given a hard disk of 500 GB. The performance details are :
• 5000 RPM rotation rate
• 200 cylinders, numbered from 1 to 200
• Takes 1 + (n/20) milliseconds to move heads across n cylinders (e.g.,
from i to i + n).
• A constant transfer rate of 100MB/s on all tracks
Assume that, for an average read, the head travels half the cylinders and half a revolution.
The average time taken to read a 1MB block from the hard disk is__?
Need help.