Secondary Storage

Secondary Storage

1. Solid state (flash) storage

   • USB memory stick
     • Storage Capacity: (maximum) 512GB
     • Storage Capacity:(minimum) 16MB
   • Excellent read/write speed(it loads and saves data quicker than Magnetic storage
   • Not good capacity compared to Magnetic storage

2. Magnetic storage

   • Magnetic hard drive
   • External hard drive
   • More storage capacity (stores a lot of data)
   • Slower read/write speed compared to Solid State Storage

3. Optical

   • CD
     • Storage Capacity: 700MB
   • DVD
     • Storage Capacity: 4.7GB
   • Blu ray
     • Storage Capacity: 25GB

4. Secondary storage is non-volatile storage.It is needed in a computer system to store all your programs,operating system and files.

   • Non-volatile means that the data will not be deleted when the device is switched off