secondary storage

secondary storage

1. SSD

   • Optical
     • Dual core
       • Has 2 independent processors working simultameously
       • Cores
         • How many independent processors there are in the CPU working simultaneously (at the same time)
       • CPU
         • Fetches, decodes and executes data/ instructions
         • Cache
           • The memory storage for the CPU. it is the fastest memory.
           • Quad Core
             • 4 independent processors working simltaneously
         • Clock speed
           • How many fetch decode execute cycles a CPU can perform per second This is measured in Hertz (HZ)
   • Magnetic
     • Data is stored magnetically
       • Data can be read directly from any part of the hard disk.
         • Longer read/write life then SSDs
         • Highest capacity
   • Lower power consumption.
     • More durable (shock proof)
       • Do not need defragmenting
         • Fastest read/write speed.