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磁盘调度, RAID:Redudant Array of inexpensive Disk:, 数据存储, 磁盘访问, 两个基本事项, RMW -…
磁盘调度
SSTF:Shortest Seek Time First,可能造成starvation,选最近的
C-SCAN:Circular Scan Back And Forth,到达终点时立即返回起点
SCAN:Scan Back And Forth,电梯算法
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