storage devices(optical storage media)

storage devices(optical storage media)

1. DVD-RAM

   • uses used in camcorders to store movies
     • adv: they have long life
       • disadv: relatively expensive

2. Blu-ray discs

   • uses: home video consoles
     • adv:very fast data transfer rate
       • diadv: relatively expensive

3. CD-rom and DVD-rom

   • uses: used to store music files, software, films
     • adv: they are less expensive than hard disk drive system
       • Disadv: the data transfer rate is slower than for hard disk drive

4. CD-R and DVD-R

   • uses: home recording of music or film
     • adv: cheaper than RW disks
       • Disadv: not all CD/DVD can read CD-R or DVD-R

5. CD-RW and DVD RW

   • uses: used to record television programmes
     • adv: can be written over many times
       • disadv: can be relatively expensive