A head crash in a fixed hard disk generally destroys the data, whereas the failure of a tape drive or optical disk drive 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。

youdao

Optical disk holds much more, data than many magnetic disks.

光盘能够存储比磁盘多得多的数据。

youdao

From an optical disk as a recording medium, a title retrieval section 310 reads title information about each title of motion picture data recorded on the optical disk.

标题搜索部分(310)从作为记录介质的光盘上读出关于记录在光盘上的运动图像数据的每个标题的标题信息。

youdao

Key to the device is what's missing: Instead of the optical drive built into most other portable devices, the MacBook Air can wirelessly borrow another device's optical drive, so that it can access software or data stored on a disk.

FORBES: Magazine Article