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Optical Backing Storage( Information Slides)(1)
Optical Backing Storage( Information Slides)(1)
Optical Backing Storage( Information Slides)(1)
Optical Backing Storage( Information Slides)(1)
Optical Backing Storage( Information Slides)(1)
Optical Backing Storage( Information Slides)(1)
Optical Backing Storage( Information Slides)(1)
Optical Backing Storage( Information Slides)(1)
Optical Backing Storage( Information Slides)(1)
Optical Backing Storage( Information Slides)(1)
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Optical Backing Storage( Information Slides)(1)

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Transcript

  • 1.  
  • 2.
    • Uses
    • To hold large files such as films that has a size of a couple of GB.
    • Advantages
    • CDs tend to be used for large files (but smaller than 1Gb)
    • DVDs are used to hold very large files
    • (several G b’s ) such as movie films.
    • Both CDs and DVDs are Portable.
    • Disadvantages
    • Files could be broken.
    • it is a Single ‘burning data’
  • 3.
    • Uses
    • CDs used by software companies for giving out software programs and data; by Music companies
    • Advantages
    • CD ROM and DVD ROM are Applications which require the prevention of deletion of data .
    • DVDs used by film distributors to give out films.
    • Disadvantages
    • It can be written only once.
    • It can be only read.
    • The file could break.
    CD ROM DVD ROM
  • 4.
    • Uses
    • Applications which require a single ‘burning’ of data, e.g. CDs
    • DVDs can record film movies and television programs.
    • Advantages
    • Can record music downloads from the Internet, Music from MP3 format and it records data for archiving or backup purposes.
    • Cost of buying both devices are cheap
    • Access to files are fast.
    • Disadvantages
    • Can be written only once (in other words, it is a single burning data)
    • Has a short lifespan (usually less than 10years)
    DVD-R CD-R
  • 5.
    • Uses
    • It is an application which requires the updating of information and has an ability to record over old data.
    • Advantages
    • It is very useful for keeping generations of files.
    • It is pretty much like a 700MB floppy disk
    • Can be written and read more than once.
    • Disadvantages
    • Not suitable for music recording.
    • It has a low rate of writing files
    • Cost of both devices are basically expensive
    • Cannot be read over by older optical drives.
    DVD-RW CD-RW
  • 6.
    • Uses
    • DVD RAM is used in video recorders, camcorders and computer memory.
    • Advantages
    • Very fast access of small files on the disc.
    • Disc defect management designed to safeguard data.
    • Can be rewritten over 100,000 times
    • Disadvantages
    • Lower quality than DVD+RW and DVD-RW, despite predating both formats.
    DVD-RAM
  • 7.
    • Uses
    • HD DVD is used in video recorders and computer memory as well as games
    • main rival is blu-ray.
    • Advantages
    • Can store high definition videos and files.
    • Audio quality is high.
    • The cost of buying the HD DVD format is cheap.
    • Disadvantages
    • Region coding is vague.
    • The majority of companies have dismissed developing the HD DVD technology.
    HD-DVD
  • 8.
    • Uses
    • Used in video recorders and computer memory as well as games consoles. It has the largest storage capacity amongst all other optical devices.
    • Advantages
    • It can hold 4.5 hours of HD (high definition) videos
    • It has a large capacity of storing devices
    • Disadvantages
    • The cost of buying this format is much more expensive when compared to the cost of HD DVD format.
    • It has a lower audio quality when compared to HD DVD.
    Blu-ray disc
  • 9.
    • Pen Drives and memory cards are classified as NAND style data storage devices .
    • Both storage devices are considered to be an improvement on both the older floppy drive disks and the more modern compact disks .
    • Advantages
    • They are resistant in scratches and dust.
    • Files can be transferred quite easily
    • Large capacity
    • Portable
    • Disadvantages
    • Has a limited number of write and erase cycles before failure
    • Can be infected by viruses quite easily.
    • Files can be damaged by physical impacts (E.g. Dropping)
    • It has great speed
    Pen drive Memory cards
  • 10.
    • It is the smallest form, used as a removable storage
    • More robust than other forms of storage
    • Can be easily written and updated.
    • Contains no mechanic parts.
    • Everything is done electronically.
    • Solid state backing storages has a much higher speed than is possible with electromechanical disk drives.
    • Solid state backing storages lags in terms of storage capacity.
    • The cost is basically expensive when compared to electromechanical drives.

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