Saturday, December 12, 2009

DVD-R and DVD+R


Recordable DVD capacity comparison

For comparison, the table below shows storage capacities of the four most common DVD recordable media, excluding DVD-RAM. (SL) stands for standard single-layer discs, while DL denotes the double-layer variants.
DVD capacity
Disk Type
Data sectors
(2,048 B each)
Capacity
bytes
GB
GiB
DVD-R (SL)
2,298,496
4,707,319,808
4.7
4.384
DVD+R (SL)
2,295,104
4,700,372,992
4.7
4.378
DVD-R DL
4,171,712
8,543,666,176
8.5
7.957
DVD+R DL
4,173,824
8,547,991,552
8.5
7.961
SL / DL – Single/Dual layer

Speed

Drive speed
Data rate
Write time for Single Layer DVD+R
1X
1.32 MB/s
60 minutes
2X
2.64 MB/s
30 minutes
4X
5.28 MB/s
15 minutes
8X
10.56 MB/s
7.5 minutes
16X
21.12 MB/s
3.75 minutes
Source: http://en.wikipedia.org/wiki/DVD%2BR

0 comments:

Post a Comment