Blu-ray Disc recordable (or BD-R) refers to two direct to disc optical disc recording technologies that can be recorded on to an optical disc with an optical disc recorder. BD-R discs can be written to once, whereas BD-RE (Blu-ray Disc Recordable Erasable) can be erased and re-recorded multiple times. Disc capacities are 25 GB for single-layer discs, 50 GB for double-layer discs, 100 GB for triple layer and 128 GB for quadruple layer (in BD-R only). The Blu-ray Disc specification defines 1× speed as 36 megabits per second.
Read more about Blu-ray Disc Recordable: Version, Speed, Pricing, BD-R LTH (Low To High)
Famous quotes containing the word disc:
““What,” it will be questioned, “When the sun rises, do you not see a round disc of fire somewhat like a guinea?” O no, no, I see an innumerable company of the heavenly host crying “Holy, Holy, Holy is the Lord God Almighty.””
—William Blake (1757–1827)