In our explanation of the physical elements of disk performance, we said that switching from 7,200rpm to 10,000rpm disks may increase performance by 10% to 50%. What would be the reason for a 10% increase? Is it possible that the situation will remain the same? Explain. (Hint: Disk performance is not only determined by rotational delay.)
Q: Consider a disk pack with 32 surfaces, 64 tracks and 512 sectors per pack. 256 bytes of data are…
A: Given that, Number of Surfaces = 32 = 25 Tracks = 64 = 26 Sectors per surface = 512 = 29 bytes per…
Q: Consider a disk that rotates at 3600 rpm. The seek time to move the head between ad- jacent tracks…
A: According to the information given:- We have to follow the instruction in order to get how long will…
Q: Suppose your company has decided that it needs to make certain busy servers 50% faster. Processes in…
A: Apply Amdahl’s law for the overall speed of a computer that is expressed as: S = 1/ [(1-f) + (f/k)]…
Q: If a hardware failure happens every 5 years for a disk, what is the annual rate of occurrence (ARO)…
A: 1 failure occurred in 5 years.
Q: Consider a Disk I/O transfer, in which 1500 bytes are to be transferred, but number of bytes on a…
A: Handwritten solution
Q: Example- 5.8 A hard disk with one platter rotates at 15,000 rpm and has 1024 and has 1024 tracks,…
A: solution : as the data given in the question ,here is the answers
Q: Consider a disk, whose track holds 16 sectors of size 512 bytes each. The disk is double…
A: The Answer is
Q: Suppose that a disk drive rotates at 8000 RPM. It has an average Seek time of 4 milliseconds. If its…
A: Disk drive is a software to read, write or save data in disk memory. It gives memory space to store…
Q: Consider a single-platter disk with the following parameters: rotation speed: 7200 rpm; number of…
A: Given Data: Rotation Speed = 7200 rpm No. of tracks on one side of platter = 30000 No. of sectors…
Q: 1. Consider a memory system with a cache access time of 100ns and a memory access time of 1200ns. If…
A: As our guidelines we can author only first question. If you want answer of other questions then…
Q: Problem: Consider a long sequence of accesses to a disk with an average seek time of 6 ms and an…
A: As given:- Problem: Consider a long sequence of accesses to a disk with an average seek time of 6 ms…
Q: Suppose that a disk drive rotates at 8000 RPM. It has an average seek time of 4 milliseconds. If…
A: The throughput is. 9.77 Mbps.
Q: Q2: According to the first principles and equations of a hard disk, answer the following branches:…
A: NOTE: As per rules we are allowed to solve one problem at a time, please upload the rest. The delay…
Q: Consider a disk pack with 32 surfaces, 64 tracks and 512 sectors per pack. 256 bytes of data are…
A: The answer is
Q: Consider a scenario where the Hard Disk is transferring block-oriented data to the Random Access…
A: Best I/O techniques to support the data transfer operation between HardDisk and RAM
Q: Suppose a disk drive has the following characteristics:1. Six surfaces2. 16,383 tracks per surface3.…
A: Given: Given that the disk drive has the following features: Number of surfaces = 6 Tracks per…
Q: Given a magnetic disk unit with the following specifications, what is the access time of this…
A: To calculate the access time of the disk, we know thatTa=Ts+1/2r+b/rNWhereTa=Access time of the…
Q: Suppose the price of memory falls by half, and the speed of disk access (number of accesses per…
A: Answer: Below is the detailed answer:
Q: A disk storage medium in the form of an assembly containing a single rigid magnetic disk permenently…
A: Explaination to A disk storage medium in the form of an assembly containing a single rigid magnetic…
Q: Discuss four categories of issues that are involved in disk cache design that must be addressed.…
A: Given: Discuss four categories of issues that are involved in disk cache design that must be…
Q: What sets a solid-state drive from from a hard disk drive (HDD) is the lack of moving parts in the…
A: Given: We must define the distinction between a hard disc drive and a solid-state drive based on the…
Q: Consider the following disk character Average seek time = 8 msec Average rotational delay = 3 msec…
A: Here in this question we have given some disk chacterstic.and we have asked to calculate average…
Q: Defintion of rotational lag and disk bandwidth is necessary.
A: The extra time spent waiting for the disc to spin the requested sector to the disc head is known as…
Q: Consider a magnetic disk drive with 8 surfaces, 512 tracks per surface, and 64 sectors per track.…
A: The Answer is
Q: Consider a disk pack with 16 surfaces, 128 tracks per surface and 256 sectors per track. 512 bytes…
A: Introduction. givena disk pack with no of surface=16tracks=128no of sector/track=256data…
Q: Suppose your company has decided that it needs to make certain busy servers 30% faster. Processes in…
A: Given : Overall speedup of new system(S)= 30% that is 100+30=130% = 1.3 Fraction of work…
Q: Explain how segmentation and paging can be used to for memory protection?
A: Role of segmentation in-memory protection:- Segmentation means the division of the memory of a…
Q: Consider a disk pack with 32 surfaces, 64 tracks and 512 sectors per pack. 256 bytes of data are…
A: Introduction given, A disk pack specifications. We have to calculate the number of bits to specify…
Q: Figure 4-22 on page 303, (a) shows a 1KB disk block can hold 256 32-bit dis ock numbers. If a disk…
A: Q1. Option (B) is correct option. Device driver acts as a translator between programmer and…
Q: A computer has a cache, main memory, and a disk used for virtual Memory • An access to the cache…
A: Cache hit ratio =0.9 So cache miss ratio = 0.1 Main memory hit ratio = 0.8 So main memory miss ratio…
Q: Assume that we are using a hard disk with the following characteristics: Capacity 200 GB • Average…
A: Note: since your question contain multiple sub-parts but e can answer only first 3-subparts at time…
Q: Let us assume a disk with rotational speed of 15,000 rpm, 512 bytes per sector, 400 sectors per…
A: a) Answer : T = transfer time = b/rN Where b = number of bytes to transfer r = rotation speed and N…
Q: Consider a Disk 1/O transfer, in which 1500 bytes are to be transferred, but number of bytes on a…
A: Given No.of bytes to be transferred (b)=1500 bytes Rotation speed (r)=1500 Number of bytes on track…
Q: Question 1: a. Using a writing speed of 700 Mbits/s, how long would it take to store a 40 GB raw…
A: Answer a:
Q: Consider a Disk l/O transfer, in which 1500 bytes are to be transferred, but number of bytes on a…
A:
Q: b). Consider a system with 32 bits per disk address that has a total of 1000,000 blocks, and 400,000…
A: Given that, Size of disk address= 32 bits Total number of blocks= 1000,000 blocks Number of free…
Q: Q2) Consider a magnetic disk drive with 8 surfaces, 512 tracks per surface, and 64 sectors per…
A: What is the disk capacity? Given, 1024bytes / sector. 64 sectors per track, 512 tracks per serface,…
Q: Consider the following data and parity-block arrangement on four disks: The Bis represent data…
A: In the given arrangement, Bis indicates data blocks and Pis indicates parity blocks. The parity…
Q: Q] Consider a disk with a sector size of 512 bytes, 2000 tracks per surface, 50 sectors Per track,…
A: Let's see the diagram:-
Q: 3. Consider disk with the following a specifications: Number of platters =16 Number of…
A: Given data No of platters = 16 No of suffices = 2 No of tracks = 512 No of sectors = 2K sector…
Q: What is the correct sequence of time delays that happen during a data transfer from a disk to…
A: Question What is the correct sequence of time delays that happen during a data transfer from a disk…
Q: Consider a three-level memory system, where the access time for the cache is T1 nanoseconds, main…
A: Given Information of 3-level Memory System- Cache access time = T1 nanoseconds Main Memory access…
Q: question(6).Consider a disk pack with 32 surfaces, 64 tracks and 512 sectors per pack. 256 bytes of…
A: Introduction :
Q: If you are to add a new 10MB process in the memory, where could it possibly be added and why? What…
A: a) Yes, Virtual memory in this configuration because in the variable partition scheme initially,…
Q: There is sequence of disk track requests:75 62 99 144 50 162 110 26 198. #Assume that the disk…
A: Given: The sequence of track=75 62 99 144 50 162 110 26 198. Initial position of track=100 Solution…
In our explanation of the physical elements of disk performance, we said that switching from 7,200rpm to 10,000rpm disks may increase performance by 10% to 50%. What would be the reason for a 10% increase? Is it possible that the situation will remain the same? Explain. (Hint: Disk performance is not only determined by rotational delay.)
Step by step
Solved in 2 steps
- In our discussion of the physical aspects of disk performance, we stated that replacing 7,200rpm disks with 10,000rpm disks can bring a 10% to 50% performance improvement. Why would an improvement of only 10% occur? Could it be that no improvement at all would occur? Explain. (Hint: Rotational latency is not the only determining factor of disk performance.)For example, we mentioned in our explanation of the physical elements of disk performance that upgrading from 7,200rpm disks to 10,000rpm disks may result in a performance increase ranging from 10% to 50%. What might possibly cause a 10% increase in performance? Is it possible that there will be no improvement at all? Explain. (Hint: Rotational delay is not the only element that influences the performance of a hard drive.)Consider a disk pack with 16 surfaces, 128 tracks per surface and 256 sectors per track. 512 bytes of data are stored in a bit serial manner in a sector. The capacity of the disk pack and the number of bits required to specify a particular sector in the disk.?
- The disk concept for reducing time lost from rotational delay is: staggered addressing why?Explain the Disk dynamics - seek time, rotational latency, andtransfer time ?Consider a disk pack with 32 surfaces, 64 tracks and 512 sectors per pack. 256 bytes of data are stored in a bit serial manner in a sector. The number of bits required to specify a particular sector in the disk is.
- Suppose that a disk drive rotates at 8000 RPM. It has an average seek time of 4 milliseconds. If its transfer rate is 15 Mbps, determine the average time it takes for a 15K byte request to be transferred from the time the disk starts the seek? From this, determine its throughput.I will upvote . Consider a disk pack with 32 surfaces, 64 tracks and 512 sectors per pack. 256 bytes of data are stored in a bit serial manner in a sector. The number of bits required to specify a particular sector in the disk isThe terms "digital memory" and "storage device" are often used interchangeably. To what extent would it benefit consumers if there were a single memory standard, similar to how there is just one standard for SSD sizes? Can customers save money and time by adopting a single standard? There are two methods for accessing memory: sequential and direct. For what reason are more and more essential devices adopting direct access? How can we move information from a sequential-access device to a direct-access device?
- Q] Consider a disk with a sector size of 512 bytes, 2000 tracks per surface, 50 sectorsPer track, five double-sided platters, and average seek time of 10 msec.a) What is the capacity of a track in bytes?b) What is the capacity of each surface?c) What is the capacity of the disk?d) How many cylinders does the disk have?e) Give examples of valid block sizes. Is 256 bytes a valid block size? 2048?51200?f) If the disk platters rotate at 5400 rpm (revolutions per minute), what is theMaximum rotational delay?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 rotational latency? c. What is the transfer time for a sector? d. What is the total average time to satisfy a request?Consider a disk with the following characteristics: block size 512 bytes, number of blocks per track=20, number of tracks per surface=400. A disk pack consists of 15 double sided disks. Suppose the disk drive rotates the disk pack at an average speed of 2400 rpm (revolutions per minute) i) How much time in (msec) does one disk revolution take? ii) Using the total capacity of the track as 10240 bytes how many bytes will be transferred from the track in 1 msec (ie transfer rate in bytes/sec)