Consider a sequence of disk requests as below: Request for Track Number: 30 90 50 140...

   

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Consider a sequence of disk requests as below: Request for Track Number: 30 90 50 140 40 What will be the total head movement, when each of the following algorithms is used: (a) FCFS b) SSTF (c) SCAN (d) C-SCAN (e) LOOK (f) C-LOOK Assume that currently the heads are positioned at track 80. You may also assume that initially the heads are moving towards track number 0, and that the disk has tracks numbered 0 through 199 on each surface. Consider a sequence of disk requests as below: Request for Track Number: 30 90 50 140 40 What will be the total head movement, when each of the following algorithms is used: (a) FCFS b) SSTF (c) SCAN (d) C-SCAN (e) LOOK (f) C-LOOK Assume that currently the heads are positioned at track 80. You may also assume that initially the heads are moving towards track number 0, and that the disk has tracks numbered 0 through 199 on each surface. Consider a sequence of disk requests as below: Request for Track Number: 30 90 50 140 40 What will be the total head movement, when each of the following algorithms is used: (a) FCFS b) SSTF (c) SCAN (d) C-SCAN (e) LOOK (f) C-LOOK Assume that currently the heads are positioned at track 80. You may also assume that initially the heads are moving towards track number 0, and that the disk has tracks numbered 0 through 199 on each surface. Consider a sequence of disk requests as below: Request for Track Number: 30 90 50 140 40 What will be the total head movement, when each of the following algorithms is used: (a) FCFS b) SSTF (c) SCAN (d) C-SCAN (e) LOOK (f) C-LOOK Assume that currently the heads are positioned at track 80. You may also assume that initially the heads are moving towards track number 0, and that the disk has tracks numbered 0 through 199 on each surface.

Answer rating: 100% (QA)

The image depicts a question related to the calculation of the total head movement in a hard disk drive when using different disk scheduling algorithms The sequence of disk requests provided is 30 90 50 140 and 40 It also states that initially the disk head is at track number 80 and is moving towards track number 0 The disk has tracks numbered 0 through 199 on each surface The algorithms that need to be considered are a FCFS FirstCome FirstServed b SSTF Shortest Seek Time First c SCAN d CSCAN Circular SCAN e LOOK f CLOOK Circular LOOK Lets calculate the total head movement for each algorithm ... View the full answer