HD DVD
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HD DVD is an obsolete high-density optical disc format for storing data and playback of high-definition video. Supported principally by Toshiba, HD DVD was envisioned to be the successor to the standard DVD format, but lost to Blu-ray, supported... Wikipedia
Capacity: 15 GB (single layer); 30 GB (dual layer)
Discontinued: March 28, 2008; (1 year, 11 months and 28 days)
Read mechanism: 405 nm laser: 1× @ 36 Mbit/s & 2× @ 72 Mbit/s
Released: March 31, 2006
Usage: Data storage, 1080p high-definition video