Consider a RAID level 5 organization comprising five disks, with  the parity for sets of four blocks on four disks stored on the fifth disk. How many blocks  are accessed in order to perform the following? a. A write of one block of data b. A write of seven continuous blocks of data

Q: A disk contains total 200 tracks and Request Queue contains tracks 80, 160, 41, 136, 22, 18, 192.…

A:

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: A disk size of 200 tracks receives the requests for the blocks for I/0. operation. No. of blocks…

A: Introduction: Disk Scheduling Algorithms: Disk scheduling is done by operating systems to schedule…

Q: Why parity disk is considered to be the bottleneck? a). All writes involve a read and write to the…

A: Parity disk:  Parity disk array has only one parity disk, which must be updated on all write…

Q: Concurrent chunks of a file are attempted to be saved on successive drives. Is there a reason why…

A: Given: Magnetic discs are quite important. An operating system's file system ensures that each file…

Q: 3. A hard disk has 64 sectors track, 16 platters, each with 2 regarding surface and 2000 cylinders.…

A: EXPLANATION: Given that the sectors that are present for every track are 64. The hard disk contains…

Q: What is the average time to read or write a 512-byte sector for a typical disk rotating at 15,000…

A: In this question we have been given some information related to computer disk and we need to…

Q: A disk contains total 200 tracks and Request Queue contains tracks 80, 160, 41, 136, 22, 18, 192.…

A:

Q: Attempts are made by operating systems to maintain subsequent blocks of a file on the same disk…

A: This question tells about operating systems make an effort to keep consecutive blocks of a file on…

Q: What is the average time to read or write a 512-byte sector for a typical disk rotating at 15,000…

A: ANSWER:-

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: Parallel attempts are made to write sections of a file to separate hard drives. Is there a reason…

A: Introduction The use of multiple hard drives in computing systems is an important tool for ensuring…

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: Q2:- Suppose there are 100 tracks in a particular disk, explain:T If the read/write head is…

A: In FCFS algorithm, the requests are served in the order of arrival. The track head moves to the…

Q: Let us consider a scenario in which the boot record of a disc volume is corrupted. Which file…

A: Corrupted boot records on disc volumes can cause serious problems with accessing the data that is…

Q: What is the average time to read or write a 512-byte sector for a typical disk rotating at 15,000…

A: Given that, The advertised average seek time = 4 ms The transfer rate =100 MB/sec The controller…

Q: Consider a disk with a sector size of 512 bytes, 2000 tracks per surface, 50 sectors per track, five…

A: (1) Capacity of track = bytes/sector * sectors/track = 512 * 50 = 25K in bytes i.e. 25K Capacity of…

Q: nsider the following scenario: ere are outstanding I/0 requests for blocks on the following…

A: In SCAN algorithm, all the request will be satisfied which are in direction of movement of head.…

Q: What is the average time to read or write a 512-byte sector for a typical disk rotating at 15,000…

A: Given: Average seek time= 4 ms= 4 ms Disk rotation= 15000 RPM= 15000 RPM Data rate= 100 MB/Sec =…

Q: Some data structures only make use of the outside tracks of magnetic disks, while others completely…

A: Specific databases that use magnetic discs only utilize sectors on the outside tracks, leaving…

Q: Q. Refer Figure 6.7 of your book where data mapping for a RAID Level 0 array is shown. Following the…

A: Here is the solution of the given problem:  I would like to map this like, 0%4 = 0: That is mapping…

Q: To access data in a hard disk, it requires the time to move the head to A. TASK: the desired track…

A: Data :-  5400 RPM  3 ms avg. Seek time  100 MB/ s transfer rate = 100000 kb/s 0.2 ms controller…

Q: What is the average time to read or write a 512-byte sector for a typical disk rotating at 15,000…

A: The question is solved in step2

Q: A program repeatedly perform the 3steps process: it reads a 4KB block of data from disk, does some…

A: As program performing a repetitive process involving reading data from disk, processing it, and…

Q: The average time necessary for the correct sector of a disk to arrive at the read write head A…

A: The correct answer for  the above question is:-

Q: 2. Consider a single-sided disk with one recordable surface where the tracks are numbered from 0 to…

A: Question from disk scheduling policies. We are given few disk track requests and we have to trace…

Q: Consider a single-platter disk with the following parameters: rotation speed:7200 rpm; number of…

A: Given data in the question: Rotation speed = 7200 rpm the number of tracks on the one side of the…

Q: Operating systems make every attempt to maintain consecutive blocks of a file on the same disk block…

A: Introduction: Storage on disc drives is organized using file systems, which may be thought of as a…

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…

Q: A file system uses X-KB disk blocks. There are a total of 2^10 files on this system. We use bitmap…

A:

Q: Suppose you are willing to sacrifice no more than 1% of a disk’s bandwidth to scrubbing. What is the…

A: Given, Disk size =1 TB bandwidth =100MB/s. In one second 100 MB scrub disk storage. Let you be…

Q: For the following buffer pool, using the LRU replacement heuristic, show the disk block ID of the…

A: According to the information given:- We have to following buffer pool, using the LRU replacement…

Q: Consider a D are to be tra track is 100C rns but the

A:

Q: Refer Figure 6.7 of your book where data mapping for a RAID Level 0 array is shown. Following the…

A: I would like to map this like, 0%4 = 0: That is mapping strip with remainder 0 to the disk 0 1%4 =…

Q: If we are using AES in CTR mode to encrypt a file of size 232 bytes, how many bits we need to…

A: The correct answer is 832 bits.   Explanation :…

Q: Consider a disk with the following characteristics: block size 512 bytes, number of blocks per…

A: First of all let's see the given values: Block size : 512 Bytes Number of blocks per track : 20…

Q: Let us consider a file system which uses inodes to manage files on disk where each inode consists of…

A: According to question bytes to be divided like:

Q: The same disk block is used by operating systems to read consecutive blocks of a file. What's the…

A: File systems, which may be seen as a hierarchical structure, organise storage on disc drives: The…

Q: Consider a disk with the following characteristics: block size 512 bytes, number of blocks per…

A: (i) Disk rotates at 2400 revolutions per min. i.e. 2400 revolution take = 1 min 1 revolution takes =…

Q: Q: Refer Figure 6.7 of your book where data mapping for a RAID Level 0 array is shown. Following the…

A: Let us use the remainder theorem as follows for matching the disks   0%4 = 0: That is mapping strip…

Q: Write a C program for a linux partition. 1. Start from the first data block of each block group 2.…

A: The solution for the above given question is given below:

Q: onsider a disc with 512-byte sectors, 1,000-track platters, 100-sector tracks, ten-track cylinders,…

A: Intro The size of a sector is 512 bytes. A plater has 1000 tracks. A track has 100 sectors. A…

Q: ppose the main memory has 32 frames and memory size is 512 bytes. Now a process P of 192 bytes needs…

A: We are given 32 frames and size of memory is given as 512 bytes. And a process P with size 192…

Fundamentals of Input and Output Performance

The I/O subsystem is a component of computer system design that uses buses to assist communication between the Central Processing Unit, Computer Memory/Storage, and Input and Output Devices (that is known as peripheral devices). The I/O subsystem includes disc controllers, tape drives, discs, system buses, and other devices. The I/O database application reads and writes drives using the operating system windows I/O.