Secondary storage

Secondary storage

1. Secondary storage is non volatile which stores data permanently

   • Computer systems need them to store all data needed

2. Solid state storage

   • Advantages
     • It has a faster data transfer speed compared to magnetic, therefore it will load files faster
     • More durable and can read and write data much faster than magnetic
   • Disadvantages
     • Limited loading and saving
     • Takes longer to load and save files
     • Less cost efective compared to magnetic because it has a much smaller capacity
   • Examples
     • USB stick
     • SD card

3. Magnetic storage

   • Advantages
     • Cost is high due to a larger capacity than solid state
   • Disadvantages
     • Not as durable due to moving parts
     • slower in camparison to sloid state
   • Examples
     • Floppy disk
     • Hard drive
     • CD drive

4. Optical storage

   • Disadvantages
     • Not very durable and has a limited capacity compared to solid state, therefore it will not last long.
   • Advantages
     • Low cost compared to solid state. This means it is good for the money because it is more portable than solid state which is more expensive.
     • Very portable compared to solid state. This means it is good for the money
   • Examples
     • CD's
     • DVD's
     • Blu-rays