Developed at IBM's Hursley, England, laboratory under code name Dolphin it used the 5440 disk cartridge.

Most of the walls were shelves, floor to ceiling, and stacked with antique tape cases, disk cartridges, and even bound hardcopy books.

Ultra Density Optical and Universal Media Disc use optical disk cartridges.

Disk packs and disk cartridges were early forms of removable media for computer data storage, introduced in the 1960s.

An early disk cartridge was a single hard disk platter encased in a protective plastic shell.

The disk cartridge was a direct evolution from the disk pack drive, or the early hard drive.

High-density 3 -inch disks avoided this problem by the addition of a hole in the disk cartridge so that the drive could determine the appropriate density.

Additionally the removable hard disk cartridges included a 5-Year Warranty.

The 5200 Optical Storage Facility contains two disk drives and an automatic changer for up to 32 disk cartridges.

It stored approximately 2.5 MB on a 14", single-platter IBM-2315-style front-loading removable disk cartridge.