DVD recordable higher-capacity formats like Blu-ray and HD DVD. A double-layer DVD+RW specification was approved in March 2006 with a capacity of 8.5 GB. However, manufacturing support for these rewritable dual-layer discs did not materialize due to costs and expected competition from newer and higher-capacity formats like Blu-ray and HD DVD. DVD recordable DVD recordable and DVD rewritable are optical disc recording technologies. DVD optical disc formats that can be recorded by a DVD recorder, (written, “burned”), either write once or rewritable (write multiple times) format written by laser, as compared to DVD-ROM, which is technically mass-produced by pressing, primarily for the
HD DVD they could be read back by the SD-L902A. HD DVD-RW is the rewritable disc variant of HD DVD with equal storage capacity to an HD DVD-R. The primary advantage of HD DVD-RW over HD DVD-R is the ability to erase and rewrite to an HD DVD-RW disc, up to about 1,000 times before needing replacement, making them comparable with the CD-RW and DVD-RW standards. This is also of benefit if there are writing errors when recording data, as the disc is not ruined and can still store data by erasing the faulty data. HD DVD-RAM was the proposed successor to