Track density can be greatly enhanced by employing optical servo technology in a diskdrive.
在磁盘驱动器中借助光伺服技术可以大幅度提高道密度。
2
A head crash in a fixed hard disk generally destroys the data, whereas the failure of a tape drive or opticaldiskdrive often leaves the data cartridge unharmed.
对于固定的硬盘，磁头撞击通常会破坏数据，然而磁带或光盘驱动器的错误通常对数据盘碟是无害的。
3
Optical head is the core device of the opticaldiskdrive. The aperture matching is the most important problems of optical head design.