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R

RAID (redundant array of inexpensive disks)

A hard disk drive where data is written on to lots of disks at the same time. If one disk gets damaged, data can be accessed from another disk.

Real time

The actual time during which something takes place, without noticeable delays.

Relational database

A database that uses more than one table. Tables are linked together by common data items, such as ID number, known as keys.

Remotely

From a different location.

Repetitive strain injury (RSI)

Damage caused to the muscles, tendons, ligaments, nerves or joints, usually because of repeating the same action.

Ripping

The process of copying audio or video content to a hard disk drive, typically from removable media such as a CD.