DVD hardware- DVD medium
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 DVD-R |
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Digital Video Disc Reader–discs can be written to once. DVD-R is used for most home DVD players and movies. Our reviewers prefer the DVD-R format for copying movies. Pioneer developed this format. DVD-R is also supported by Panasonic, Toshiba, Apple Computer, Hitachi, NEC, Pioneer, Samsung and Sharp and the DVD Forum. |
| DVD-R(W) |
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Digital Video Disc Reader & Writer–based on the DVD-R format but can be written to 1,000 times. |
| DVD+R DL (Dual Layer) |
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This type of DVD has 2 layers allowing it to hold up to twice the amount of Data (9.5GB). You may burn data to this type of disk only if you have a dual layer DVD burner. |
| DVD+R |
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Digital Video Disc Reader–discs can be written to once. This format is a little faster for accessing data and a bit more expensive. Our reviewers prefer the DVD+R format for data recording. This format was developed after DVD-R and is in competition with that format. Eventually, one of the two formats may dominate the marketplace and eliminate the other. The + format is supported by Sony, Philips, HP, Dell, Ricoh, Yamaha and other manufacturers. |
| DVD+RW |
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DVD+RW is a re-recordable format based on the DVD+R format. The data on a DVD+RW disc can be erased and recorded over 1,000 times without damaging the medium.
DVDs created by a +R/+RW device can now be read by most commercial DVD-ROM players. |
| DVD-RAM |
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Digital Video Disc Random Access Memory-discs can be written to 100,000 times. This format is different than DVD-R and DVD+R. The drive and media are much more expensive. These discs are often encased in plastic for resilience. These discs are popular for professional DVD video editing and other applications requiring multiple rewrites, edits or backups. |
| DVD-ROM |
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Digital Video Disc Read Only Memory is the format of commercial DVDs that are stamped, not burned with a DVD writer. DVD movies you buy or rent are DVD-ROM format. |
| CD-R |
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Compact Disc Reader discs dominate the CD-writing market. They hold up to 700 MB of data and can be written to once.The spindle of blank CDs you buy to back up your music collection are CD-R. |
| CD-RW |
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Compact Disc Reader & Writer discs are based on the CD-R format and can be written to 1,000 times. |
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