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SSTF (Shortest Seek Time First) after a request, go to the closest request in the work queue, regardless of direction

 

60-->53-->39-->37-->28-->14-->98-->122-->170

7+14+2+9+14+84+24+48=202
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Requests are serviced in the sequence - 60, 53, 39, 37, 28, 14, 98, 122, 170. So, total head movement = (60-14)+(170-14) = 202

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