Computer Science for IGCSE & O level - Hardware (Section 27 - No. 34)
What is meant by rotational latency in an HDD?
The time it takes for the read/write heads to move across the disk.
The time it takes for the disk to spin up to its operating speed.
The time it takes for the desired sector to rotate under the read/write head.
The time it takes to read data from the platter
Paliwanag
Rotational latency is the delay waiting for the correct sector to spin into place.