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| Disk Scheduling Algorithms |  |
Answer Comparison of SCAN und C-SCAN : The C-SCAN is more fair than SCAN, because the demands from the outer tracks of hard drive can be processed faster than SCAN. The SCAN is faster than C-SCAN, because the C-SCAN scans in cycles, always increasing or decreasing, with one idle head movement from one edge to the other between two consecutive scans.