Reference no: EM131053913
Consider a disk with the following characteristics (these are not parameters of any particular disk unit): block size B = 512 bytes; interblock gap size G = 128 bytes; number of blocks per track = 20; number of tracks per surface = 400. A disk pack consists of 15 double-sided disks.
a. What is the total capacity of a track, and what is its useful capacity (excluding interblock gaps)?
b. How many cylinders are there?
c. What are the total capacity and the useful capacity of a cylinder?
d. What are the total capacity and the useful capacity of a disk pack?
e. Suppose that the disk drive rotates the disk pack at a speed of 2400 rpm (revolutions per minute); what are the transfer rate (tr) in bytes/msec and the block transfer time (btt) in msec? What is the average rotational delay (rd) in msec? What is the bulk transfer rate? (See Appendix B)
f. Suppose that the average seek time is 30 msec. How much time does it take (on the average) in msec to locate and transfer a single block, given its block address?
g. Calculate the average time it would take to transfer 20 random blocks, and compare this with the time it would take to transfer 20 consecutive blocks using double buffering to save seek time and rotational delay.
|
Explain how you would disseminate this information
: In your initial post, briefly analyze and define who the client is in this case study. Assess your professional role as the I/O psychologist and your responsibility to the client as defined. Apply the APA's Ethical Principles of Psychologists and ..
|
|
The vvh radiology department currently uses fcfs
: The VVH radiology department currently uses FCFS to determine how to sequence patient x-rays. On a typical day, the department collects data related to patient x-rays. Use these data to compare various sequencing rules.
|
|
Create a survey to measure service quality
: iMeasuring Service Quality Using a hotel brand as an example for this assignment, create a survey to measure service quality. You should use the SERVQUAL measurement scale as a basis for your survey
|
|
How fast are they moving from each other
: The horizon system is a system is a coordinate system of locating an object on the sky. What is the value of azimuth of the East on the celestial horizon?
|
|
What is the total capacity of a track
: What is the total capacity of a track, and what is its useful capacity (excluding interblock gaps)?
|
|
Product as ameasure of economic performance
: What are some of the limitations using gross national product as ameasure of economic performance?
|
|
What is the flaw of argument
: A common argument in favor of minimum wage laws is that they are necessary to prevent employers from taking unfair advantage of their employees. What is the flaw of this argument? Please include a example.
|
|
What is meant by more productive a resource is more demand
: What is meant by "The more productive a resource is, the more it will be in demand." Can you provide an example?
|
|
Calculate the blocking factor bfr
: Calculate the average time it takes to find a record by doing a linear search on the file if (i) the file blocks are stored contiguously, and double buffering is used; (ii) the file blocks are not stored contiguously.
|