RDX QUIKSTOR combines the simplicity of tape based backup with the speed and flexibility of a hard drive. Compact internal or external drives take neat pocket-sized cartridges. Each cartridge is a rugged miniature hard disk - your computer will recognise it and provide instant access and easy drag and drop control. Or simply run the backup software provided for a total backup of your hard drive. When a cartridge gets full, just insert another - simple!