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Assignment No. 04
Semester: Spring 2012

CS609: System Programming

 

Total Marks: 20

 

Due Date: 18/06/2012

Instructions

Please read the following instructions carefully before submitting assignment:

It should be clear that your assignment will not get any credit if:

  • The assignment is submitted after due date.
  • The submitted assignment does not open or file is corrupt.
  • Solution is copied from any other source.

 

Objective

The objective of this assignment is to enhance your knowledge about;

  • Data storage on a hard disk
  • Schemes for addressing storage units.

 

Assignment                                                                  

 

Part a)  

05 Marks

You have studied in this course that Tracks are the circular division of the disk and the Sectors are the longitudinal division of the disk. A typical track is shown in yellow; a typical sector is shown in blue. A sector contains a fixed number of bytes -- for example, 256 or 512.

 

As per division like above, there is a clear difference in size of sectors on inner and outer tracks which causes under utilization of the larger, outer tracks of the disk. What mechanism is used to improve disk surface area utilization?

 

Part b)

15 Marks

Suppose, we have a Hard disk having 16 (Read/Write) Heads per Cylinder, and Maximum number of Sectors per Track is 63. It has total 1024 cylinders and Sector size is 512 Bytes. Answer the following questions.

Q#1. Find the LBA address of the CHS address (4, 6, 12)?

Q#2. Find the CHS address of the LBA address 4256?

Q#3. Find the Total Data Storage Capacity of this Hard Disk?

 

Submission

You are required to submit a single MS word file through LMS containing:

  • Justify your answer with solid reasons while answering the question given in Part (a).
  • Give answers to the questions given in Part (b) with brief explanation.

 

 

 

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