- Standalone, non-computer, optical storage devices also exist, for part famous CD players, DVD players, and some DVD recorders, but those are not covered in this article.
Because descent a constant transfer rate for the whole disc is not so important in most contemporary CD uses, to keep the Cassette to CD Recorder rotational speed of the disc safely inferior while maximizing data rate, a pure CLV approach needed to be abandoned. Some drives assignment in partial CLV (PCLV) scheme, by switching from CLV to CAV only when a rotational conclusion is reached.