Secondary Storage

Secondary Storage

1. Optical

   • Example Devices
     • DVD
     • BluRay
     • CD
   • Definition
     • Optical storage is the storage of data on an optically readable medium. Data is recorded by making marks in a pattern that can be read back with the aid of light, usually a beam of laser light precisely focused on a spinning optical disc.

2. Magnetic

   • Definition
     • Data storage is a critical component of any computer system. Magnetic storage is one of the most affordable ways to store large amounts of data and has been implemented using magnetic tape, floppy disks and hard disk drives.
   • Example Devices
     • Hard Disk Drive
     • Floppy Disk Drive
     • Magnetic Tape

3. Solid State

   • Example Devices
     • SDD
     • HDDs