1.

Once the head has reached the desired track, the time spent waiting for the sector to be accessed to appear under the head is called the _______________(a) Access time(b) Average seek time(c) Seek time(d) Rotational latency timeI have been asked this question in class test.My question is taken from Magnetic Disk and Flash Storage topic in section Storage and File Structures of Database Management

Answer»

Correct option is (d) ROTATIONAL latency time

To explain: Rotational speeds of DISKS today RANGE from 5400 rotations per minute (90 rotations per SECOND) up to 15,000 rotations per minute (250 rotations per second), or, equivalently, 4 MILLISECONDS to 11.1 milliseconds per rotation.



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