secondary storage

secondary storage

1. It is a non volatile storage.It is needed in a computer system to store your programs operating system and files

   • Non-volatile means that the data is not deleted when the computer system has no power connected to in

2. optical storage

   • CD
   • DVD
   • Blu Ray
   • Really portable and can be played on lots of devices
   • The disadvantage of optical storage is that it is not very durable and has limited capacity

3. solid state (flash) storage

   • play station memory card
   • solid state hard drive
   • USB memory stick
   • Excellent read/write speed.It loads and saves data quickly)
   • Not good capacity compared to magnetic storage

4. magnetic storage

   • data is stored by magnetising the surface of flat, circular plates called platters
   • The advantage of magnetic storage is that it is cost effective due to having a larger capacity than solid state
   • The disadvantage of magnetic storage is that it is not as durable due to moving parts and reads/writes data slower in comparison to solid state