Qual é a diferença entre os discos DVD-R e DVD + R?
Eu geralmente compro DVD + R só porque é uma vantagem. Isso faz diferença para os arquivistas? O preço é quase o mesmo para os dois formatos.
Em leituras anteriores e análises que li, o DVD-R tem uma compatibilidade maior do que o DVD + R - por exemplo, em DVD Players antigos (por exemplo, 2004 e anteriores), o DVD-R funcionaria em 90 % de sistemas, enquanto o DVD + R funcionaria em 80%. (Estes são números da memória e podem estar desligados, mas tenho 99% de certeza de que -R é MAIS compatível que + R.)
Além disso, -R tem 6.625 MiB de espaço mais utilizável. Veja: link
De About.com :
Standards Differences
1) The DVD-R (pronounced "DVD dash R") and -RW media formats are officially approved by the standards group DVD Forum. The DVD Forum was founded by Mitsubishi, Sony, Hitachi, and Time Warner, so it has tremendous industry support for its technical standards.
2) DVD+R ("DVD plus” R) and +RW formats are not approved by the DVD Forum standards group, but are instead supported by the DVD+RW Alliance. The DVD+RW Alliance is supported by Sony, Yamaha, Philips, Dell, and JP, so it also has tremendous industry support for its technical standards. Note that Sony supports both organizations.
Technical Differences
The main functional differences between DVD-R and DVD+R are:
1) the DVD recorder's built-in defects management
2) the way the recorders format and rewrite DVDs
3) the price.
Meu entendimento é que o DVD + é o melhor sistema, especialmente agora que praticamente todas as unidades lidam com ambas as mídias.
Um ... só porque há um "+" no nome não melhora. Leia a Wikipedia ( link ) para uma explicação simples:
Recordable format compatibility
DVD drives from 2004 should be able to read either of the competing recordable formats, older drives may favour DVD-R discs. Modern drives (certainly at time of writing in 2007) typically allow writing to both DVD-R[W] and DVD+R[W] discs making the difference largely irrelevant to the average consumer.
DVD-R for Authoring: a special-purpose DVD-R used to record DVD masters, which can then be duplicated to pressed DVDs by a duplication plant. They require a special DVD-R recorder, and are not often used nowadays since many duplicators can now accept ordinary DVD-R masters.
DVD-R (strictly DVD-R for General): can record up to 4.7 GB in a similar fashion to a CD-R disc. Once recorded and finalized it can be played by most DVD-ROM players.
DVD+R: can record up to 4.7 GB single-layered/single-sided DVD+R disc, at up to 16x speed. Like DVD-R you can record only once.