|  | 
   
    |  |  |  |  |  |  |  |  |  |  |  |  |  
    | • | Seek
    time dominates the performance of 
 |  |  
    |  |  
    |  | disk
    drive transfers 
 |  |  
    |  |  
    |  | • | (in
    some systems!) 
 |  |  
    |  |  
    | • | Can
    the disk arm be moved to improve the 
 |  
    |  |  
    |  | effective
    disk performance? 
 |  |  
    |  |  
    | • | Assume
    a request queue to cylinder #’s 
 |  |  
    |  |  
    |  | 98,
    183, 37, 122, 14, 124, 65, 67 
 |  |  
    |  |  
    | with current head pointer at cylinder #53 
 |  |  |  |