Double-sided electronic media may be used, but they are not easily accessed with a standard drive, as they require to be physically reverted to access the data on the other side.
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Optical drive's rotational mechanism differs considerably from hard disk drive's, in that the later keep a habitual angular velocity (CAV), in other words a stable number of revolutions per infinitesimal (RPM)
- With CAV, a higher throughput is generally achievable at an outer disc area, as compared to inner Cassette to CD Recorder area.