Verbatim Blu-ray HD DVD manual Roadmap, Blu-ray Specifications, HD DVD Specifications

Specifications

Blu-ray Specifications

Disc Type	BD-R		BD-RE
	(Write-once)		(Re-writable)
Recording Layer	Single	Dual	Single	Dual
	layer	layer	layer	layer
Recording capacity
	25GB	50GB	25GB	50GB
Recording layer	Inorganic		Phase-change
	material		material
Laser wavelength
	405 nm		405 nm
Lens numerical
	0.85		0.85
aperture (NA)
Standard data
	36 Mbps		36 Mbps
transfer rate
Disc diameter
	120 mm		120 mm
Disc thickness
	1.2 mm		1.2 mm
Cover Layer
	0.1mm		0.1mm
Tracking	Groove		Groove
	recording		recording
Track pitch
	0.32 μm		0.32 μm
Shortest mark length
	0.149 μm		0.149 μm

Roadmap

HD DVD Specifications

Disc Type	HD DVD-R		HD DVD-RW*
	(Write-once)		(Re-writable)
Recording Layer	Single	Dual	Single	Dual
	layer	layer	layer	layer
Recording capacity
	15GB	30GB	15GB	30GB
Recording layer	Organic dye		Phase-change
	material		material
Laser wavelength
	405 nm		405 nm
Lens numerical
	0.65		0.65
aperture (NA)
Standard data
	36.55 Mbps		36.55 Mbps
transfer rate
Disc diameter
	120 mm		120 mm
Disc thickness	1.2 mm		1.2 mm
	(0.6mm + 0.6mm)		(0.6mm + 0.6mm)
Tracking	Groove		Groove
	recording		recording
Track pitch
	0.40 μm		0.40 μm
Shortest mark length
	0.204 μm		0.204 μm

* Specifications of HD DVD-RW have yet to be finalised

Q1 2007

Q2 2007

Q3 2007

Q4 2007

2008

2009

BD-R	2x		4x	6x	8x
25GB
BD-RE
	2x			4x
25GB
BD-R
		2x		4x	6x
50GB
BD-RE
				2x	4x
50GB

BD-R/RE		2x
8cm
HD DVD-R	1x	2x	4x	6x
15GB
HD DVD-R		1x
30GB
HD DVD-RW		2x
15GB
				68444-106/GB/5400/0607