What Is Dual Layer Recording?
Dual Layer recording allows DVD-R and DVD+R discs to store significantly more data. A Dual Layer disc differs from its usual DVD counterpart by employing a second physical layer within the disc itself. The drive with Dual Layer capability accesses the second layer by shining the laser through the first semi-transparent layer. Many current DVD recorders support dual-layer technology, and the price point is comparable to that of single-layer drives, though the blank media remains significantly more expensive. Dual layer technology is supported by a range of manufacturers including Dell, HP, Philips, Sony, etc. As the name suggests, dual layer technology provides two individual recordable layers on a single-sided DVD disc. Dual Layer is more commonly called Double Layer in the consumer market and can be seen written as DVD+R DL or DVD-R DL.
