Define access time for magnetic disk.

The sum of seek time and rotational delay is known as access time for disks.

Seek Time:

Seek time is the time needed to move the read/write head to the proper track.

Rotational latency:

Rotational latency is the amount of time that elapses after the head is positioned over the correct track unless the stating position of the addressed sector passes under the read/write head.

 

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