title: SCAN and C-SCAN disk scheduling
body: <p><a href="http://www.slideshare.net/myrajendra/scan-scheduling-50-1" rel="nofollow">http://www.slideshare.net/myrajendra/scan-scheduling-50-1</a>
  <a href="http://www.slideshare.net/myrajendra/c-scan-scheduling-50-2" rel="nofollow">http://www.slideshare.net/myrajendra/c-scan-scheduling-50-2</a></p>
  
  <p>In the above links both SCAN and C-SCAN was explained with a same example but why does SCAN moves towards left and C_SCAN moves towards right?</p>