Secondary Storage

Secondary Storage

1. it is non-volatile storage needed in a computer system to store programs , operating systems or files

   • non-volatile means that the data is saved when the computer system is turned off

2. optical storage

   • CDs
   • DVDs
   • Blu-Rays
   • advantages
     • the cost effect is good.
     • it is very portable
   • disadvantages
     • not very durable
     • has a limited capacity

3. solid state (flash) storage

   • uses microchips to store data instead of magnetised disks and do not contain any moving parts.
   • advantages
     • more durable and can read and write data much faster than magnetic
     • it is also more energy efficient.
   • disadvantages
     • less cost effective compared to magnetic because it has a smaller capactity.
     • it has limited read/write lifespan
   • hard drive (HPE Nimble storage)
   • HPE SimpliVity(hard drive)

4. Magnetic Storage

   • data is stored by magnetising the surface of flat, circular plates called platters. These platters rotate at a very high speed
   • advantages
     • the cost effective is better due to having a larger capacity than solid state therefore it will allow the platters to store more items on it.
   • disadvantages
     • not as durable due to moving parts compared to Solid State therefore it is more likely to be smashed.
     • Magnetic Storage reads and writes data slower
   • hard drive
   • hard drive (internally mounted)
   • hard drive (external and portable)