Secondary Storage

Secondary Storage

1. Solid state ( flash storage )

   • USB flash drive
   • SSD
   • Advantage: More durable and can read and write data much faster than magnetic storage. It is also more energy efficient
   • Disadvantage: Less cost effective in comparison to magnetic because it has a smaller capacity. It also has a limited read/write life spam.

2. Optical storage

   • DVD
   • Blue-ray
   • Disadvantages: Not very durable and has a limited capacity
   • Advantages: Cost effective and very portable

3. Magnetic storage

   • Floppy disks
   • Hard-disk drives
   • Disadvantages: Not as durable due to moving parts and read/writes data slower in comparison to solid state
   • The biggest advanatge of magnetic disk storage over main memory is persistence of data