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5. A disk has 1024 sectors/track with 4096 bits/sector and a rotation rate of 7200 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 program must write 4 sectors onto a disk. Each sector is 0.5KB. The disk drive...
A program must write 4 sectors onto a disk. Each sector is 0.5KB. The disk drive rotates at 10,000 rpm. The average seek time is 6 ms and the disk controller overhead is 1 ms. The transfer rate is 1 MB/sec. The current location of the R/W head is not known. What is the time to write this data if a. Sectors are on the same track and are contiguous b. Sectors are on the adjacent cylinders. The sectors can...
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 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...
Consider a magnetic disk that has 1,764 cylinders, 500 sectors per track (on average), 0.07 milliseconds...
Consider a magnetic disk that has 1,764 cylinders, 500 sectors per track (on average), 0.07 milliseconds minimum seek time, and 5,376 rpm rotational speed. Assume that the disk heads have a constant speed. Each sector is 512 bytes, and each block is four sectors. What is the average rotational delay in milliseconds (rounded to no decimal places)?
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...
single-platter disk
Question DetailsConsider a single-platter disk with the following parameters:rotation speed: 7200 rpm; number of tracks on one side ofplatter:30,000; number of sectors per track:600;seek time: one msfor every hundred tracks traversed. Let the disk receive a requestto access a random sector on a random track and assume the diskhead starts at track0.a) What is the average seek time?b) What is the average rotational latency?c) What is the transfer time for a sector?d) What is the total average time to satisfy...
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?
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)?
Question 7. A hard disk has the following parameters 8 surfaces 40,000 tracks per surface •...
Question 7. A hard disk has the following parameters 8 surfaces 40,000 tracks per surface • 512 sectors per track 1024 bytes per sector Rotational speed 10,000 rpm a) What is the capacity of the drive? b) What is the rotational latency? c) Once a sector has been accessed, what is the rate at which data is read?
A program must write 4 sectors onto a disk. Each sector is 0.5KB. The disk drive rotates at 10,000 rpm. The average seek time is 6 ms and the disk controller overhead is 1 ms. The transfer rate is 1 MB/sec. The current location of the R/W head is not known. What is the time to write this data if a. Sectors are on the same track and are contiguous b. Sectors are on the adjacent cylinders. The sectors can...
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...
Question 7. A hard disk has the following parameters 8 surfaces 40,000 tracks per surface • 512 sectors per track 1024 bytes per sector Rotational speed 10,000 rpm a) What is the capacity of the drive? b) What is the rotational latency? c) Once a sector has been accessed, what is the rate at which data is read?
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