Example

The spool size for Site X is three single density 3380s (2655 cylinders). The utilization of spool normally averages between forty and fifty percent. However, at end of month, large volumes of output are created and spool utilization reaches around ninety percent. Once the monthly reports are printed, the spool returns to its average utilization. The size is set to cope with the peak period so that the spool utilization does not reach 100% and JES stops processing.