SCAN Disk Scheduling Algorithm in Operating System - Elevator Algorithm

Learn the SCAN disk scheduling algorithm, also known as the elevator algorithm, in this 12-minute tutorial that explains one of the fundamental disk scheduling techniques used in operating systems. Explore how the SCAN algorithm works by moving the disk arm in one direction until it reaches the end of the disk, then reversing direction, similar to how an elevator operates in a building. Understand the algorithm's implementation, advantages, and disadvantages compared to other disk scheduling methods like FCFS, SSTF, and C-SCAN. Discover how this algorithm helps optimize disk access time and reduces seek time by serving requests in a systematic manner. Gain insights into the practical applications of the elevator algorithm in modern operating systems and how it contributes to efficient disk I/O operations.