Secondary Storage

Secondary Storage

1. Magnetic

   • Cost effective
     • Larger capacity than solid state therefore it can store more data
   • Not very durable
     • Contains moving parts
   • Slower read/write speed compared to solid state therefore it is slower at loading and processing data
   • Data is stored by magnetising the surface of flat, circular plates called platters. These platters rotate at a very high speed
   • Hard disk drive
   • Floppy disk

2. Stores data permanently

   • Non volatile

3. Solid State

   • Good durability compared to optical
     • Faster read write speed than magnetic storage therefore it is faster at loading and processing data
   • Less cost effective
     • Has a limited read/write lifespan meaning it will eventually fail
   • Uses microchips to store data instead of magnetised disks and do not contain any moving parts
   • Good portability compared to magnetic storage
   • USB stick
   • Flash memory

4. Optical

   • Is any storage method in which data is written and read with a laser. CDs, DVDs and Blu-Ray are examples of this type of storage.
   • Cost effective
     • Very portable compared to magnetic
   • Not very durable
     • Has limited capacity
   • DVD
   • CD