Higher performance in hard disk drives comes from devices which have better performance characteristics. These performance characteristics can be grouped into two categories: access time and data transfer time .
A hard disk head on an access arm resting on a hard disk platter
Low-level formatting software from 1987 to find highest performance interleave choice for 10 MB IBM PC XT hard disk drive
Constant linear velocity
Videos
In optical storage, constant linear velocity (CLV) is a qualifier for the rated speed of an optical disc drive, and may also be applied to the writing speed of recordable discs. CLV implies that the angular velocity varies during an operation, as contrasted with CAV modes. The concept of constant linear velocity was patented in 1886 by phonograph pioneers Chichester Bell and Charles Tainter.
The Zone-CLV recording strategy is easily visible after burning a DVD-R