Computing revision - storage

Computing revision - storage

1. Secondary storage

   • Non-volatile
   • Back-up for primary storage
   • External memory
   • Not directly accessible by the CPU

2. Primary storage

   • Solid state
     • Resistant to physical shock
     • Expensive
     • Non-volatile
   • Optical
     • Lightweight
     • The disk is vulnerable to scratches
     • Non-volatile
     • Expensive
   • Magnetic
     • Non-volatile
     • Store large amounts of data
     • Data can be altered by magnetic fields
     • Cheap