Secondary Storage

Secondary Storage

1. Optical Storage

   • Blu-Ray
   • DVDs
   • Advantage
     • It's is portable which can be used on other devices is cost effective when you need multiple copies of a file compared to magnetic storage as if you need lots of storage space you need to pay more.
   • Disadvantage
     • It's not very durable as it can get damaged easily and has a limited capacity so it can't hold as much data as wanted

2. Secondary storage is non volatile storage which stores data permanently

3. Magnetic Storage

   • Advantage
     • It's cost effective compared to solid state due to having a larger capacity
   • Disadvantage
     • It's not very durable like solid state due to moving parts and writes/reads slower in comparison to solid state
   • Hard drive
   • Floppy disks

4. Solid State (flash) storage

   • Phone
   • Advantages
     • It does not contain any moving parts unlike magnetic and doesn't use magnetised disks. More durable and can read and write data much faster than magnetic storage (it has also got more energy efficient).
   • USB
   • Disadvantage
     • It's less cost effective in comparison to magnetic because it has a much smaller capacity. It also has a limited read/write lifespan.