STORAGE

STORAGE

1. SOLID STATE

   • Examples
     • CD
     • DVD
   • ADVANTAGES
     • Speed
     • Durability
     • Energy-Efficient
   • DISADVANTAGES
     • Lifespan
     • Cost
     • Storage
   • Durability (3)
   • Reliability (3)
   • Portability (2)

2. MAGNETIC

   • ADVANTAGES
     • Persistence
     • Capacity
     • Cost
     • No moving parts.
   • Examples
     • Magnetic Tape
     • Floppy Disks
     • Hard-Disk drives
     • Audio cassettes
     • Video cassettes
   • Fact: Before music CDs were introduced in the 1980s, portable music devices used magnetic tape in the form of music cassettes.

3. DISADVANTAGES

   • If you scratch a CD then you cannot get anything back.

4. OPTICAL

   • Examples
     • CD
     • DVD
     • Compact DIsk
     • HDSS (Holographic Data Storage System)
   • ADVANTAGES
     • Low cost per bit of storage.
     • Mountable/unmountable storage units.
     • Mass storage capacity (on the order of gigabytes)
     • Long media life.
     • High data stability.
   • Portability (3)
   • Reliability (1)

5. ADVANTAGES

   • Data storage saving
   • Security
   • Data recovery
   • Easy sharing