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All About DVD Writer Technology

by vgevge

In the world of data storage, DVD (Digital Versatile Disc or
Digital Video Disc), holds a very important place. They are used
for the storage of both video and data. Like CD or compact discs,
D.V.D shares the same physical dimensions, yet its storage
capacity is much higher. A DVD can store up to six times more
data than a CD. This is one primary reason why DVDs are so
popular today.

Just like a CD writer one can find D.V.D writers also. A Digital
Video Disk writer is a drive that records or writes onto blank
DVDs. It can burn movies or data onto a blank D.V.D, and in some
cases it can also overwrite existing data (DVD-RW). While a
DVD-Rom only reads and cannot write, a Digital Video Disc writer
can do both. With the help of DigitalVD writers, one can make
their own movie discs. A DigitalVD writer can help in reducing
the cost of home theatre production. In the past, you would have
had to hire a production company to make home video. Now, you can
burn it yourself onto Digital Video Disc!

Internal and external are two types of hardware that writers are
available in. The difference is simply that internal drives can
be mounted directly into your desktop tower chasis. External
drives cannot, however they are more transportable and can be
moved quickly from one computer to another. The internal writers
are usually less expensive.

There are four different DVD speeds, namely CAV, CLV, PCAV, and
ZCLV. In CAV or constant angular velocity, the Digital Video Disc
is written at a constant increasing speed. In CLV or constant
linear velocity, the Digital Video Disc is written at a constant
speed. In zone constant linear velocity or ZCLV, the disk is
divided into various zones and the speed is increased after each
zone is written. While a Digital Video Disc is being written, the
speed increases to some maxmimum after which it levels out. This
is what happens when PCAV or Partial Constant Angular Velocity
takes place. The average speed to write any type of media is
presently 16x. The average speed for rewrite is 4x.

A DVD writer uses various kinds of interfaces like SCSI, IDE
FireWire and USB. An internal writer generally supports IDE
interface compatibility. While external products may require some
other kind of interface. External models most commonly use
Firewire, which is fitted in the PCI slot of a computer. But
now-a-days more and more Digital Video Disc writers are using USB
2.0 that offer speeds up to 480Mbps.

In order to install a DVD writer, a minimum configured system is
required. If you are choosing to create an image of a disk onto
your hard drive, you will need at least 4.7GB of hard drive space
free to do it. That will be twice as much for a dual layer
Digital Video Disc.

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