Secondary Storage

Secondary Storage

1. Magnetic!

   • Examples
     • Floppy Disks
     • Hard Disk Drive
   • Advantages
     • Very Low cost
     • Faster than Optical
     • High capacity
   • Disadvantages
     • Moving Part inside
     • Not Reliable
     • The disk is fixed inside the computer and cannot easily be transferred to another computer
     • Slow Read/Write speed

2. Optical!

   • Examples
     • DVDs
     • Disks
     • CDs
     • Blu-Ray
   • Advantages
     • Very cheap to produce
     • Small and portable
     • Most computers can read CDs. If there is no CD drive, a DVD drive can usually read them
     • Cost effective
   • Disadvantages
     • Fairly fragile, easy to snap or scratch
     • Smaller storage capacity than a Hard Drive or Solid State Drive
     • Slower to access than the hard disk.

3. Solid State!

   • Examples
     • Phones
     • Macbook
     • SSD Drive
   • Disadvantages
     • Less cost effective
     • Limited Read/Write lifespan
     • Low capacity
   • Advantages
     • It reduced heat
     • It reduced power consumption
     • Increased durability due to no moving parts to wear out or fail
     • Fast Read/Write speed

4. Purpose!

   • The purpose of storage devices is to store data and software for later use. Without these, you wouldn't be able to do anything on the computer!