HD DVD-R

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Optical disc authoring
Optical disc Optical disc image Recorder hardware Authoring software Recording technologies Recording modes Packet writing
Optical media types
Laserdisc Compact Disc/CD-ROM: CD-R, CD-RW MiniDisc DVD: DVD-R, DVD-R DL, DVD+R, DVD+R DL, DVD-RW, DVD+RW, DVD+RW DL, DVD-RAM Blu-ray Disc: BD-R, BD-RE HD DVD: HD DVD-R: HD DVD-RAM UDO UMD
Standards
Rainbow Books File systems ISO 9660 Joliet Rock Ridge Amiga extensions to Rock Ridge El Torito Apple ISO9660 Extensions Universal Disk Format Mount Rainier

HD DVD-R is the writable disc variant of HD DVD, and is available with a single-layer capacity of 15GB or dual-layer capacity of 30GB.^[1] Currently, HD DVD-R has slower write speeds than the competing BD-R format (1–2x vs 1–4x) and lower storage capacity.

Pricing of HD DVD devices and blank media is yet to be released (September, 2006), but it is expected that devices will be available at a lower price-point than the competing Blu-ray Disc format.

[edit] Speed

Drive speed	Data rate		Write time for Single Layer HD DVD
1X	36.55 Mbit/s	4.36 MB/s	55 min.
2X	73 Mbit/s	8.71 MB/s	28 min.

[edit] References

1. ^ Verbatim (January 7, 2007). Verbatim/MKM Ready to Ship 30GB Dual Layer HD DVD-R Media to North American Markets. Press Release. Retrieved on March 23, 2007.

[edit] External links

• The Authoritative HD DVD FAQ by Hugh Bennett