Optical jukebox
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An optical jukebox is a robotic storage device that can automatically load and unload optical media, such as Ultra Density Optical or Blu-ray disc and provide terabytes of near-line information. The devices are often called optical disk libraries, robotic drives, or autochangers. Jukebox devices may have up to 1,000 slots for disks, and usually have a picking device that traverses the slots and drives. The arrangement of the slots and picking devices affects performance, depending on the space between a disk and the picking device. Seek times and transfer rates vary depending upon the optical technology.
Jukeboxes are used in high-capacity archive storage environments such as imaging, medical, and video. Hierarchical storage management is a strategy that moves little-used or unused files from fast magnetic storage to optical jukebox devices in a process called migration. If the files are needed, they are migrated back to magnetic disk.
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