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| Disk Scheduling Algorithms |  |
C-SCAN C-SCAN also moves the head in one direction, but it offers fairer service with more uniform waiting times. It does not alter the direction, as in SCAN. Instead, it scans in cycles, always increasing or decreasing, with one idle head movement form one edge to the other between two consecutive scans. The performance of C-SCAN is somewhat less than SCAN
Traditional Disk Scheduling
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