An HDD disk head is initially positioned over track 100 and is moving in the direction of decreasing track number. It receives requests for a number of tracks in the following order: 20, 130, 115, 186, 174, 43, 12, 61, 121. What is the average seek time in a SCAN scheduling policy? Analysis of Average Seek Time with SCAN Scheduling

Analyse of the Average Seek Time using SCAN Scheduling

Policy   The average seek time in a SCAN scheduling policy is the time required for a head of a hard drive disk (HDD) to move from the initially positions of track no. From 100 tracks to the required tracks. It is difficult to understand as the head can move back and forth between lower tracks numbers and higher numbers depending on the request. You must identify the path that the head follows in the most efficient way for both the average wait time and the seek time.  According to the SCAN scheduling policy the head must move in one direction until reaching one track. Then it should reverse the direction. The head would move from track 100, where it was initially placed, to track 20. Track 130 is next, and the process continues until the head reaches track 0. This would include the wait time and the total movement time of the head.   You can calculate the average seek times in SCAN scheduling policies by taking into account head movement and wait time.   References  Tatar, S. (2015). Seek time optimization methods for hard disk data storage requests. Automation and Computing, 21(2). DOI: 10.14355/AAC.2015.21.02.03   Ebrahim, A. (2021). A Study of Scheduling Policies on Hard Disk. International Journal of Computer Networks and Communications Security 9(2). DOI: 10.26456/ijcncs.2021.9.2.157Cont…

Place your order
(550 words)

Approximate price: $22

Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
The price is based on these factors:
Academic level
Number of pages
Basic features
  • Free title page and bibliography
  • Unlimited revisions
  • Plagiarism-free guarantee
  • Money-back guarantee
  • 24/7 support
On-demand options
  • Writer’s samples
  • Part-by-part delivery
  • Overnight delivery
  • Copies of used sources
  • Expert Proofreading
Paper format
  • 275 words per page
  • 12 pt Arial/Times New Roman
  • Double line spacing
  • Any citation style (APA, MLA, Chicago/Turabian, Harvard)

Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

Read more

Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

Read more

Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.

Read more

Privacy policy

Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.

Read more

Fair-cooperation guarantee

By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.

Read more