Shortest Seek Time First (SSTF)

Shortest Seek Time First (SSTF):

Here the position which is closest to the current head position is chosen first. Consider the previous example where disk queue looks like,

98, 183, 37, 122, 14, 124, 65, 67

Assume the head is initially at cylinder 56. The next closest cylinder to 56 is 65, and then the next nearest one is 67, then 3714, so on.

Shortest Seek Time First


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