Question

Consider a magnetic disk drive with 8 surfaces, 512 tracks per surface, and 64 sectors per
track. Sector size is 1 KB.The average seek time is 8 ms, the track-to-track access time is
1.5 ms, and the drive rotates at 3600 rpm. Successive tracks in a cylinder can be read
without head movement.
a. What is the disk capacity?
b. What is the average access time? Assume this file is stored in successive sectors
and tracks of successive cylinders, starting at sector 0, track 0, of cylinder i.
c. Estimate the time required to transfer a 5-MB file.
d. What is the burst transfer rate?

Answer 1

Consider a magnetic disk drive with 8 surfaces, 512 tracks per surface, and 64 sectors per track. Sector size is 1 KB. The average seek time is 8 ms, the track-to-track access time is 1.5 ms, and the drive rotates at 3600 rpm. Successive tracks in a cylinder can be read without head movement.