Homework-2
Due date: Oct 19th, 2006
Secondary Storage
Secondary storage provides additional storage space separate from memory. The most common secondary storage devices are magnetic disks, but magnetic tape also provides secondary storage. Magnetic disks are diskettes, usually 3 ½ inches in diameter, or hard disks. Hard disks on large systems are contained in a disk pack. Hard disks hold more data and offer faster access than diskettes do. Some hard disks come in removable cartridge form. Disk data is read by disk drives. Optical disks, such as CD-ROMs, use a laser beam to read large volumes of data. Magnetic tape comes on reels or in cassettes and is mainly used for backup purposes. Magnetic tape reels are mounted on tape drives.
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