- noun a data storage medium such as a magnetic tape or floppy disk that is not the main high-speed computer storage
- Any device that a computer uses as a storage medium. For example, disk drives or tape drives.
- Additional computer storage beyond that in the main storage.
- synonymauxiliary memory
- A form of high-speed computer memory which accessed through a high-speed data channel. Unlike RAM, this memory is not directly addressable by the CPU.