1. [syn: rotational latency, latency]
WordNet (r) 3.0 (2006):
n 1: (computer science) the time it takes for a specific block
of data on a data track to rotate around to the read/write
head [syn: rotational latency, latency]
The Free On-line Dictionary of Computing (30 December 2018):
The time for the start of the required
sector on a disk to appear underneath the read/write
head. The worst case is where it has just passed the head
when the request is received. For a disk drive with N heads
per surface, rotating at R revolutions per minute, the average
rotational latency will be
L = 30/NR seconds.
Rotational latency is one component of access time.