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Question:

Explain how the storage capacity and density of a disk can be calculated. A disk pack having a diameter of 3.0 inches has 5 plates (10 recording surfaces). It has 5000 tracks per surface with 128 sectors per track. Assuming that each sector can store 1 kB of data, calculate the storage capacity and storage density of the disk.

Answer:

To calculate the storage capacity and storage density of the disk, we need to follow these steps:

Storage Capacity

The storage capacity of the disk can be calculated using the following information:

  • Number of recording surfaces (platters): 10
  • Number of tracks per surface: 5000
  • Number of sectors per track: 128
  • Data storage per sector: 1 kB

Storage Density

The storage density can be calculated in terms of data stored per unit area. For simplicity, we can calculate the data storage per square inch.

Given,

 

Summary

  • Total storage capacity: 6250 MB
  • Storage density: Approximately 92,658,154 bytes per square inch

This concludes the calculation of the storage capacity and storage density of the disk.