Dvd Recordable

DVD write-once formats

DVD write-once formats

DVD-R

DVD+R

DVD rewritable formats

DVD-RW

DVD+RW

DVD-RAM

Speed

Drive speed

Data rate

Disc write time

Equivalent CD rate

Reading speed

1

11.08 Mbit/s

1.32 MB/s

53 min

9

818

2

22.16 Mbit/s

2.64 MB/s

27 min

18

2024

4

44.32 Mbit/s

5.28 MB/s

14 min

36

2432

5

55.40 Mbit/s

6.60 MB/s

11 min

45

2432

6

66.48 Mbit/s

7.93 MB/s

9 min

54

2432

8

88.64 Mbit/s

10.57 MB/s

7 min

72

3240

10

110.80 Mbit/s

13.21 MB/s

6 min

90

3240

16

177.28 Mbit/s

21.13 MB/s

4 min

144

3240

18

199.44 Mbit/s

23.76 MB/s

3 min

162

3240

20

221.60 Mbit/s

26.40 MB/s

2 min

180x

3240

24

265.92 Mbit/s

31.68 MB/s

2 min

216x

3248

Notes:

DVD 1 actual spin is 3 times that of CD 1

Disk write time in table does not include overhead, leadout, etc.

Capacities

Most DVDR/RWs are advertised as having a capacity of 4.7 GB. However these DVDs seem to hold less than the stated 4.7GB because many manufacturers quote the capacity of a DVD using decimal prefixes instead of the binary prefixes used by some software. This can be confusing for many users. While a 4.7 GB DVD can store 4.7 billion bytes: 4,700,000,000 bytes 1000 B/kB = 4,700,000 kB 1000 kB/MB = 4,700 MB 1000 MB/GB = 4.7 GB, using binary prefixes the same capacity is roughly 4.38 GiB: 4,700,000,000 bytes 1024 B/KiB = 4,589,844 KiB 1024 KiB/MiB = 4,482.27 MiB 1024 MiB/GiB = 4.38 GiB.

Mini DVDs sold for use with camcorders generally have a capacity of approximately 1.7GB.

DVDR DL discs are advertised as holding 8.5 GB.

The Actual Storage Capacity for DVDs are:

DVD-R = 4.36GiB - 4.38GiB

DVD-RW = 4.36GiB - 4.38GiB

DVD+R = 4.36GiB - 4.37GiB

DVD+RW = 4.36GiB - 4.37GiB

DVD-RAM = 4.26GiB - 4.27GiB

As you can see, DVD-RAM offers less space (varies from 100mb to 120mb)

Longevity

See also: Optical_disc_recording_technologies#Longevity

According to a study published in 2008 by the Preservation Research and Testing Division of the U.S. Library of Congress, most recordable CD products have a higher probability of greater longevity compared to recordable DVD products.

References

^ osta.org

^ CD-R and DVD-R RW Longevity Research

Categories: DVDHidden categories: All articles with unsourced statements | Articles with unsourced statements from October 2007

Dvd Recordable

By: dpdo

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