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upling many disks together. Properties of this system are as follows: Uses 10 GB disks that rotate at 10,000 RPM, have a data transfer rate of 10 MBytes/s (for each disk), and have an 8 ms average seek time, 32 KByte block size Has a SCSI interface with a 2ms controller command time. Is limited only by the disks (assume that no other factors affect performance). Has a total of 20 disks Each disk can handle only one request at a time, but each disk in the system can be handling a different request. The data is not striped (all 1/O for each request has to go to one disk). What is the average service time to retrieve a single disk block from a random location on a single disk, assuming no queuing time (i.e. the unloaded request time)?

upling many disks together. Properties of this system are as follows: Uses 10 GB disks that rotate at 10,000 RPM, have a data transfer rate of 10 MBytes/s (for each disk), and have an 8 ms average seek time, 32 KByte block size Has a SCSI interface with a 2ms controller command time. Is limited only by the disks (assume that no other factors affect performance). Has a total of 20 disks Each disk can handle only one request at a time, but each disk in the system can be handling a different request. The data is not striped (all 1/O for each request has to go to one disk). What is the average service time to retrieve a single disk block from a random location on a single disk, assuming no queuing time (i.e. the unloaded request time)?

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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dont try attempting , if you are not very very good at maths . i will report your account. if you do any  kind of shit in answer section.

Example-5.15 Suppose that we build a disk subsystem to handle a high rate of 1/O by coupling many disks together. Properties of this system are as follows: Uses 10 GB disks that rotate at 10,000 RPM, have a data transfer rate of 10 MBytes/s (for each disk), and have an 8 ms average seek time, 32 KByte block size Has a SCSI interface with a 2ms controller command time. Is limited only by the disks (assume that no other factors affect performance). Has a total of 20 disks Each disk can handle only one request at a time, but each disk in the system can be handling a different request. The data is not striped (all 1/0 for each request has to go to one disk). What is the average service time to retrieve a single disk block from a random location on a single disk, assuming no queuing time (i.e. the unloaded request time)?
Transcribed Image Text:Example-5.15 Suppose that we build a disk subsystem to handle a high rate of 1/O by coupling many disks together. Properties of this system are as follows: Uses 10 GB disks that rotate at 10,000 RPM, have a data transfer rate of 10 MBytes/s (for each disk), and have an 8 ms average seek time, 32 KByte block size Has a SCSI interface with a 2ms controller command time. Is limited only by the disks (assume that no other factors affect performance). Has a total of 20 disks Each disk can handle only one request at a time, but each disk in the system can be handling a different request. The data is not striped (all 1/0 for each request has to go to one disk). What is the average service time to retrieve a single disk block from a random location on a single disk, assuming no queuing time (i.e. the unloaded request time)?
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