DVD (Digital Versatile / Video Disk)

Digital Versatile Disk Or Digital Or Digital Video Disk (DVD) Is A Form Of Digital Storage. DVD IS Used To Store Music, Video, Game, And Multimedia Applications. DVD Is Similar To A CD In Appearance And Structure. It Offers Higher Capacity And Better Quality As Compered To The CD. The Store Capacity Of A DVD Is Seven Times That Of A CD. A DVD Drive Is Required To Read Or Write Data From Or To A DVD.



Blu-Ray, Also Known As Blu-Ray Disk (BD), is The Name Of A Next-Generation Optical Disk Format.  BD Is Developed Joined By Blu-Ray Disk Association (BDA), Consumer Electronics And Media Manufacturers.

Blu-Ray Disc Enable You To Record Up To 25 GB Of Data Or Up To 2 Hour Of High Definition Video On A Single Sided, Which Almost six Time The Capacity Of A DVD. This Disc Single Or Douala Layer Format Ans Uses Industry Standard MPEG-2 Compression Technology. A Single Layered BD Has The Capacity To Store 25 GB Of data And A Double Layered BD Can Stored Up To 50 GB Data. The Re writable Blu-Ray Disk Has Data Transfer Rate Of 36 Mbps.


Blu-Ray Player Are Used To Play Blu-Ray Disc

(Blu-Ray Drive, 1*=4.5MB/s. Data Transfer Rate Of BD-Rom Is 54.0 Mbytes/s i.e 12*MAx)


DVD-ROW Drives Can Have Two To Three Speed Listed. An Example Of A DVD ROM Speed Listing Is 4*/24*. The First Speed Refers To The Maximum Speed At which The Data Is Read From A DVD. The Second Speed Listing refers To The Maximum Speed At Which Data Is Read From Cd.

DVD-RW Drive Described As “16*/6*/16*” Would Have The Following Speeds:-

  • DVD-R Write Speed          16*
  • DVD-RW Write Speed       6*
  • DVD Read Speed               16*


Optical Disc Drive Media Formats

Most optical drives can play and/or record a large number of different disc formats.

Popular optical drive formats include CD-ROM, CD-R, CD-RW, DVD, DVD-RAM, DVD-R, DVD+R, DVD-RW, DVD+RW, DVD-R DL, DVD+R DL, BD-R, BD-R DL & TL, BD-RE, BD-RE DL & TL, and BDXL.


The “R” in these formats means “recordable” and the “RW” means “rewritable.” For example, DVD-R discs can be written to just once, after which the data on them cannot be changed, only read. DVD-RW is similar but since it’s a re writable format, you can erase the contents and write new information to it at a later time, as often as you’d like.

Record able discs are ideal if someone is borrowing a CD of photos and you don’t want them to accidentally delete the files. A re writable disc may be handy if you’re storing file backups that you’ll eventually erase to make room for newer backups.

Discs that have the “CD” prefix can store around 700 MB of data, while DVDs can keep around 4.7 GB (nearly seven times as much). Blu-ray discs hold 25 GB per layer, dual layer BD discs can store 50 GB, and triple and quadruple layers in the BDXL format can store 100 GB and 128 GB, respectively.

Be sure to reference your optical drive’s manual before purchasing media for your drive to avoid incompatibility issues.