DVD-RAM

DVD-RAM
Borders of the hard sectors are visible on the data side of a type 2 DVD-RAM disc
Media typeOptical disc
Capacity
  • Version 1.0: 2.58 GB per side
  • Version 2.0: 4.7 GB per side
  • Version 2.1: 1.46 GB per side (8 cm; 3" discs)
Block size2 KiB
Read mechanism300–650 nm laser
Write mechanism650 nm laser
Dimensions12 cm (5"), 8 cm (3")
Extended fromDVD
Released1996
Discontinued2019

DVD-RAM (DVD Random Access Memory) is a DVD-based disc specification presented in 1996 by the DVD Forum, which specifies rewritable DVD-RAM media and the appropriate DVD writers. DVD-RAM media have been used in computers as well as camcorders and personal video recorders since 1998.[1]

In May 2019, Panasonic, the only remaining manufacturer of DVD-RAM discs, announced that it would end production of DVD-RAM media by the end of that month, citing shrinking demand as the primary motivation.[2] Panasonic made these discs under its own brand name and also under the Verbatim brand.

The "RAM" in its name is not related to random-access memory (also named "system memory" or "computer memory") that computers use to store opened programs, a much different technology.

  1. ^ "Understanding DVD - Physical, Logical and Application Specifications". www.osta.org. Optical Storage Technology Association. Retrieved 28 July 2020.
  2. ^ "DVD-RAM Disc for Recording Completion of Production" (in Japanese). Panasonic Corporation. Retrieved 2019-05-22.