Secondary Storage

Magnetic, Optical and Solid state/Flash

Magnetic Storage

Old technology now, and slowly becoming more and more outdated. They are often cheap and can store a lot of data (high capacity). Magnetic disks are read with a moving head inside the disk drive and magnetic tapes are read by moving the tape past a read-write head. Because they use moving parts, they are very vulnerable to damage and can break if moved whilst in use. Also vulnerable to data loss, and a big enough magnet could wipe an entire hard drive, erasing all your data!