Your SlideShare is downloading. ×
Storage Devices
Storage Devices
Storage Devices
Storage Devices
Storage Devices
Storage Devices
Storage Devices
Storage Devices
Storage Devices
Storage Devices
Storage Devices
Upcoming SlideShare
Loading in...5

Thanks for flagging this SlideShare!

Oops! An error has occurred.

Saving this for later? Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime – even offline.
Text the download link to your phone
Standard text messaging rates apply

Storage Devices


Published on

  • Be the first to comment

  • Be the first to like this

No Downloads
Total Views
On Slideshare
From Embeds
Number of Embeds
Embeds 0
No embeds

Report content
Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

No notes for slide


  • 1. O<br />ptical storage devices<br />Advantages :<br />Disadvantages :<br /><ul><li>With proper care, optical media can last a long time.
  • 2. When data is written to them, they cannot be reused. This is excellent for archiving because data is preserved permanently of being overwritten.
  • 3. Optical media are widely used on other platforms, including the PC.
  • 4. Optical media provide the capability to pinpoint a particular piece of data stored on it, independent of the other data on the volume .
  • 5. The write-once read-many (WORM) ,it excellent for archiving, but it also prevents you from being able to use that media again.
  • 6. The server uses software compression to write compressed data to your optical media. It need the long time to stroe more datas.</li></ul>Mai 10RP<br />
  • 7. CD-Rom<br />Typical size = 650mb<br />Advantages :<br /><ul><li>Data cannot Be erased – you cannot lose your data
  • 8. Easy to carry around
  • 9. Cheap to produce
  • 10. Can Be read By a DVD drive</li></ul>Disadvantages :<br /><ul><li>Fragile
  • 11. Can scratch easily – this effects the data when the laser reads it
  • 12. Slower to access than a hard drive</li></ul>Mai 10RP<br />
  • 13. DVD-ROM<br />Read Only Memory (Read Only)<br />Advantages :<br />Disadvantages :<br /><ul><li>Can only be used for reading.
  • 14. Movies you buy or rent are usually DVD-ROM.
  • 15. Although some discs can hold up to 17 GB of information.
  • 16. Can hold a minimum of 4.7 GB of movies, music, text, or images.
  • 17. Access rates for DVD ROMs range from 600 Kbps to 1.3 Mbps.
  • 18. Once the information is recorded onto a DVD ROM, it can’t be changed or altered.
  • 19. You may have trouble operating some programs with your DVD ROM drive.</li></ul>Mai 10RP<br />
  • 20. CD R/DVD R<br />Recordable (Only write one time)<br />DVD recordable<br />Advantages :<br />Disadvantages :<br /><ul><li>Can only be written with -R type drives.
  • 21. Can be read with -R or +R type drives.
  • 22. DVD+R
  • 23. 2 hours of video in SP mode or 4 hours in EP mode
  • 24. Can only be written with +R type drives.
  • 25. Can be read with -R or +R type drives.
  • 26. Data on a DVD-R cannot be changed</li></ul>Mai 10RP<br />
  • 27. CDRW/DVDRW<br />DVD-rewritable<br />Compact Disc Re-Writable<br />Advantages :<br />Disadvantages :<br /><ul><li>The data burned on a CD-RW cannot be changed
  • 28. you have to completely erase a CD-RW every time you want to change the files or add new data
  • 29. they don't store data reliably for as long as CD-Rs do.
  • 30. A CD-RW can be written to multiple times.
  • 31. CD-RWs a good choice for making frequent backups.</li></ul>Mai 10RP<br />
  • 32. DVD RAM<br />DVD- Random Access Memory<br />Advantages :<br />Disadvantages :<br /><ul><li>Long life—  without physical damage
  • 33. Can be rewritten over 100,000 times
  • 34. Disc defect management designed to safeguard data.
  • 35. DVD-burning software may not be required 
  • 36. Less compatibility than DVD+RW and DVD-RW
  • 37. 12x media is not reportedly available in Europe.
  • 38. DVD-RAM media have always been more expensive than other types of DVD.</li></ul>Mai 10RP<br />
  • 39. HD DVD<br />High-Definition/Density DVD<br />Advantages :<br />Disadvantages :<br /><ul><li>high-density optical disc format for storing data
  • 40. HD DVD was envisaged to be the successor to the standard DVD format.
  • 41. maximum capacity: 15 GB per layer
  • 42. it’s hard to deny that the HD-DVD player is a great device for the price
  • 43. It’s expensive </li></ul>Mai 10RP<br />
  • 44. Blu-ray<br />is an optical discstorage medium designed to supersede the standard DVD format.<br />Advantages :<br />Disadvantages :<br /><ul><li>It’s main uses are for storing high-definition video, PlayStation 3 video games.
  • 45. 25 GB per single layered, and 50 GB per dual layered disc
  • 46. a standard DVD uses a 650 nanometer red laser, Blu-ray uses a shorter wavelength
  • 47. six times more data storage than a DVD
  • 48. It’s too expensive.
  • 49. Blu-ray attempted to woo consumers with awfully big pockets by presenting them
  • 50. Blu-ray disc can't hold much more than four or five hours of high definition content.</li></ul>Mai 10RP<br />
  • 51. Solid state backing storage<br />Disadvantages :<br />Advantages :<br /><ul><li>Smallest form of memory
  • 52. More expensive than</li></ul>other forms but can be easily written to and updated.<br /><ul><li>used as removable storage</li></ul>More robust than other forms of storage.<br />Mai 10RP<br />
  • 53. Memory sticks<br />Pen drives<br />Advantages :<br />Disadvantages :<br /><ul><li> It can be lost.
  • 54. It can be broken, if we dropped.
  • 55. It can lost the information easily.
  • 56. Can store up to many Gb.
  • 57. Used to transport files and backup</li></ul>data from computer to computer.<br />Mai 10RP<br />
  • 58. Flash memory <br />cards<br />Advantages :<br />Disadvantages :<br /><ul><li>Used in digital cameras, palmtops, mobile phones, MP3</li></ul>players.<br />Mai 10RP<br /><ul><li>It can be lost and broken</li>