Consider a (very old) disk with the following characteristics: block size B = 512 bytes. gap size G = 128 bytes. 30 sectors per track. 500 tracks per surface. 20 double-sided platters. Disk platters rotate at a speed of 2400 rpm, average seek time 30 msec, (all numbers are given as a factor of 2, i.e., KB = 2^10, MB = 2^20) a)What is the total capacity of a track? and what is its useful capacity of a track (excluding inter-block gaps) b) How many cylinders are there? c) What is the total capacity of a cylinder?

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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.