(DVD-RAM) Rewritable DVD media that is recordable on both sides, giving up to 9.6GB of storage.A drive can record to disk and read from it at the same time, so the term full duplex is often used.There are two general types of media: traditional discrete disk in DVD or Jewel case, and one in a permanent case like a large floppythe disk remains in the case, and the case goes into the drive.The former can sometimes be read by regular DVD drivesthe latter obviously cannot.{Technical details, somewhat dated, at burnworld.com (http://www.burnworld.com/dvd/primer/dvdram.htm)}.(2005-01-26)