[2021] CSU23016 Concurrent Systems and Operating Systems - 3.c Disk Access Time
3. (c) Given a Hard Disk with the following parameters:
Rotational speed (p) 5400 RPM
Seek Time between adjacent Tracks 1mS
Average Seek Time 10mS
Sector Size 512 bytes
Sectors per Track 100
(i) Explain the terms \Track", \Sector", and \Seek Time".
(ii) Calculate the time to read 100kbytes if all the sectors are randomly mixed across the disk.
(iii) Calculate the time to read 100kbytes if all the sectors are in order on two adjacent tracks.
[5 marks]
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