Main Page | See live article | Alphabetical index Secondary storage is a category of Computer storage. It is used to store data that is not in active use. It is usually slower and has higher capacity than Primary storage, and is almost always non-volatile. Storage devices in this category include: CD, CD-R, CD-RW DVD Floppy disk Hard disk Magnetic tape Paper tape Punch card Flash memory This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.