secondary storage

secondary storage

1. magnetic

   • has 3 discs that move at a very fast speed and could be scratched easily if moved
   • serial access can be slow
   • need special equipment to record and read data
   • cheapest form per magabyte
   • can be set up to do backup over night
   • can store large amounts of data

2. solid state

   • more expensive than hard disk drives
   • shorter life span then hard disk drives
   • limited storage capacity
   • low power consumption
   • durable than hard disk drives
   • faster than hard disk drives

3. optical media

   • slowest put of all 3
   • long media life
   • every portable and small
   • mountable/unmountable storaqge unit
   • does not provide enough storgae in comparison to other storgae technologies
   • holds less data