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What will be the number of cylinders in a hard disk in which each recording surface contains 8 tracks and each track is divided into 16 sectors?

What will be the number of cylinders in a hard disk in which each recording surface contains 8 tracks and each track is divided into 16 sectors? Correct Answer 8

  • A cylinder is a division of data in a disk drive, as used in the CHS addressing mode of a fixed block architecture disk or the cylinder head-record addressing mode of CKD disk.
  • The concept is concentric, hollow, cylindrical slices through the physical disks (platters), collecting the respective circular disk aligned through the stacks of platters.
  • The number of cylinders of a disk drive exactly equals the number of tracks on a single surface in the drive.
  • It comprises the same track number on each platter, spanning all such tracks across each platter surface that can store data.
  • Cylinders are vertically formed by tracks.
  • Conceptually, a cylinder is “standing on the top of one track and looking straight down through all of the platters. For eg. If one has 2000 tracks, it has 2000 cylinders”.

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