2006-09-16 10:40:23 · 6 answers · asked by dodgybloke572000 1 in Computers & Internet ➔ Hardware ➔ Other - Hardware
standard one only has one layer of recording media, dual layer dvd has two..it records 4.7gb on the first layer.. then goes to the layer underneath and records another 4.7gb.. like the slight pause you get on a dvd movie, it switches to the second layer to get the next lot of information.... soon, there will be 4 layer dvd's where you can record 18.8 gb on a single disc, by turning it over....
2006-09-16 10:51:54 · answer #1 · answered by paulrb8 7 · 0⤊ 0⤋
Dual layer dvd uses 2 lasers on the disk to pack twice as much data into the same space. The normal for a single layer dvd is around 4.7 gigs a dual layer can fit a full 9.4 gigs (thats 9625.6 Megs) one dual layer disk can store more than 6600 floppy disks!
2006-09-16 17:44:34 · answer #2 · answered by romeohsdrumline 3 · 0⤊ 0⤋
keeping it in terms that most can easily understand, the single layer disk can fit pretty much most 2.5 hour length movies, the dual layer is for movies that are in excess of 3 hours. like everyone else has already said the single layer (when burning a movie on it) allows for 4.5 gigs worth of movie the reason I assume for the lower amount than what is advertized is for the menu section and file alocations on the disk, likewise on the dual layer disk you are able to record 8.9 gigs worth of movie with the balance left for menu section and file allocation.
Marco
2006-09-16 18:37:36 · answer #3 · answered by Mollison_98 2 · 0⤊ 0⤋
DVD-DL can be burned on both sides of a disk with a DVD-DL recording drive, without the need to flip the disk to read/write the other side. With standard DVD-RW+/- and DVD-R+/- 9.4GB disks only one side can be burned and read at a time.
Additional FYI: DVD-RAM (cartridge) is the only other format that doesn't require disk flipping, with the additional archive safety of no scratching/finger oils/UV damage, since it's protected by a plastic sleeve. It's also identified by Windows XP as a mini hard drive, and can operate as one natively. DVD-RAM has the highest RW rate of all formats (minus Blu-Ray), yet slower to write/read. Currently only Panasonic has a DVD drive that can use cartridge based DVD-RAM.
2006-09-16 18:37:42 · answer #4 · answered by SandyKIT 3 · 0⤊ 0⤋
A standard DVD is 4.7Gb and a dual layer is 9.4Gb.
2006-09-16 17:43:59 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Double the size, double the space, double the time to write...
That's it.
2006-09-16 17:47:22 · answer #6 · answered by Bassem 3 · 0⤊ 0⤋