???Homework Answers
Nothing is given in question so any of the above can be applied.
Add Answer to:
??? 4) A disk has a rotation time of 6 ms and a controller overhead of 1 ms. It takes 106 ms to ac record 2,304,000...
please help 4) A disk has a rotation time of 6 ms and a controller overhead of 1 ms. It takes 106 ms to ac record 2,...
please help
4) A disk has a rotation time of 6 ms and a controller overhead of 1 ms. It takes 106 ms to ac record 2,304,000 bytes long from the disk. The data transfer time for this record is 90 ms. a) What is the seek time for this disk? b) How many tracks does the record occupy? c) How big is a track on this disk in bytes? d) What is the disk's bandwidth in megabytes per second?...
A) How long does it take to read 1,056,000 contiguous bytes from a disk with these...
A) How long does it take to read 1,056,000 contiguous bytes from a disk with these specs: Block (sector) size: 512 bytes Sectors per track: 180 IODCU overhead: 1.6 ms Seek time: 11 ms Rotation speed: 12,500 RPM B) A disk has 250 (512 byte) blocks per track and a data transfer rate of 22.4 Megabytes per second. What is the disk's rotational speed in revolutions per minute (RPM)?
Consider a single-platter disk with the following parameters: rotation speed: 7200 rpm; number of...
Consider a single-platter disk with the following parameters: rotation speed: 7200 rpm; number of tracks on one side of platter: 30,000; number of sectors per track: 600; seek time: one ms for every hundred tracks traversed. Let the disk receive a request to access a random sector on a random track and assume the disk head starts at track 0. a. What is the average seek time? b. What is the average rotational latency? c. What is the transfer time...
A hard disk has average seek time of 70 ms, rotation speed of 4150 rpm, and...
A hard disk has average seek time of 70 ms, rotation speed of 4150 rpm, and 333 byte sectors with 55 sectors per track. We need to read a file consisting 130 sectors. Answer the following? Total average access time can be expressed as T a = T s+1/(2r)+b/rN ̈ What is the total file size to be transferred? ̈ What is the total time for the transfer if data is organized sequentially? ̈ What is the total time for...
Suppose a disk drive in your system has a rotation speed of 7,200 rpm. and seek...
Suppose a disk drive in your system has a rotation speed of 7,200 rpm. and seek times of 0.75 ms track-to-track, or 22 ms full ‘stroke’ (inner edge to outer edge). (a) What is the average latency to access this drive? (b) If the sustained read rate is 36 Mbits/sec, how much more time after the average latency (you calculated above) will it take to read 750 Kbytes (assuming all those bytes are in sequential sectors on the same track)?...
A hard disk has average seek time 9ms, 7200 revolutions per minute, disk transfer rate of...
A hard disk has average seek time 9ms, 7200 revolutions per minute, disk transfer rate of 30 MBytes/sec and controller transfer rate of 500 MBits/sec. What is the average time to read or write a 1KB sector to this hard disk?
Suppose we have a magnetic disk with the following parameters : • Average seek time =...
Suppose we have a magnetic disk with the following parameters : • Average seek time = 6 ms • Rotation rate = 5400 RPM • Transfer rate = 100 MB/second • Sector size = 512 bytes What is the average time to read a single sector?
7. [1+1+1-3 points] Compute the (a) transfer time, (b) average rotational latency, and(c) disk access time for the following input data for a disk? Rotational speed- 7200 rpm, sector size- 0.5 KB...
7. [1+1+1-3 points] Compute the (a) transfer time, (b) average rotational latency, and(c) disk access time for the following input data for a disk? Rotational speed- 7200 rpm, sector size- 0.5 KB, average seek time 5.7 ms, transfer rate 24.5 MB per sec, controller overhead -1 ms
7. [1+1+1-3 points] Compute the (a) transfer time, (b) average rotational latency, and(c) disk access time for the following input data for a disk? Rotational speed- 7200 rpm, sector size- 0.5 KB, average...
9. a. What are the advantages of using a glass substrate for a magnetic disk? b....
9. a. What are the advantages of using a glass substrate for a magnetic disk? b. How are data written and read onto/from a magnetic disk? c. What common characteristics are shared by all RAID levels? Describe the seven RAID levels with appropriate illustrations. Explain the term striped data. How is redundancy achieved in a RAID system? d. Consider a 4-drive, 200GB-per-drive RAID array. What is the available data storage capacity for each of the RAID levels 0, 1, 3,...
Assume a rather old disk drive is configured as follows. The total storage is divided among...
Assume a rather old disk drive is configured as follows. The total storage is divided among 32 surfaces. There are 2048 tracks per sector. There are 512 sectors per track. There are 512 Bytes per sector. The interleaving factor is 4. The disk turns at 7200 rpm. The average startup time for the read/write arm is 15 ms and the average time to move the arm is 0.2 ms per track. Now assume that there is 8 MB file on...
please help
4) A disk has a rotation time of 6 ms and a controller overhead of 1 ms. It takes 106 ms to ac record 2,304,000 bytes long from the disk. The data transfer time for this record is 90 ms. a) What is the seek time for this disk? b) How many tracks does the record occupy? c) How big is a track on this disk in bytes? d) What is the disk's bandwidth in megabytes per second?...
7. [1+1+1-3 points] Compute the (a) transfer time, (b) average rotational latency, and(c) disk access time for the following input data for a disk? Rotational speed- 7200 rpm, sector size- 0.5 KB, average seek time 5.7 ms, transfer rate 24.5 MB per sec, controller overhead -1 ms
7. [1+1+1-3 points] Compute the (a) transfer time, (b) average rotational latency, and(c) disk access time for the following input data for a disk? Rotational speed- 7200 rpm, sector size- 0.5 KB, average...
9. a. What are the advantages of using a glass substrate for a magnetic disk? b. How are data written and read onto/from a magnetic disk? c. What common characteristics are shared by all RAID levels? Describe the seven RAID levels with appropriate illustrations. Explain the term striped data. How is redundancy achieved in a RAID system? d. Consider a 4-drive, 200GB-per-drive RAID array. What is the available data storage capacity for each of the RAID levels 0, 1, 3,...
Most questions answered within 3 hours.
-
Calculate the pH of a 5.7 M solution of aniline (C6H5NH2; Kb =
3.8 x 10^-10)
asked 45 minutes ago -
LSL R3, R3, R12
Memory
Address
Orig.
Data
Updated
Data
Register
Orig.
Data
Updated
Data
0x84F0...
asked 47 minutes ago -
Air at 100 kPa and density of 1.2 kg/m3 flows upward through a
5-cm diameter inclined...
asked 55 minutes ago -
Define the following concepts in your own words: (a) stiffness,
(b) strength, (c) strain,
(d) ductility,...
asked 1 hour ago -
In C++
In this homework, you will be tasked with creating functions to
manipulate strings that...
asked 2 hours ago -
An isolated colony represents a pure culture. one rare occasions
, however , a colony can...
asked 2 hours ago -
*****DO NOT ANSWER THIS QUESTION IF YOU DON'T
KNOW*******Rights and Duties of Auditors; Minimum 4000
words...
asked 3 hours ago -
The probability that Janie is wearing sunglasses is 1/4. The
probability that she is wearing sunglasses...
asked 3 hours ago -
Do you believe social media is more of a help or a hindrance in
controlling crises...
asked 4 hours ago -
Two long, parallel wires separated by 2.85 cm carry currents in
opposite directions. The current in...
asked 3 hours ago -
Question # 1. Develop a list of rehabilitation journals
that publish articles concerning career counseling for...
asked 4 hours ago -
Bryant Company has a factory machine with a book value of
$85,100 and a remaining useful...
asked 4 hours ago