Consider a disk queue with I/O requests to blocks on the following cylinders 30, 134, 28,

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Question:

Consider a disk queue with I/O requests to blocks on the following cylinders — 30, 134, 28, 15, 56, 85, 126, 80, 60, 8. Currently the head is at cylinder 52. The system uses the SSTF disk scheduling algorithm. Assume that the range of cylinder numbers on the disk is from 0 to 199. Calculate the total head movement for servicing all the I/O requests. Clearly show the sequence in which the I/O requests are serviced. Also, clearly show the calculations. This is an upload type question.