an Entity references as follows:
Versatile Multilayer Disc (VMD or HD VMD) was a high-capacity red-laser optical disc technology designed by New Medium Enterprises, Inc. VMD was intended to compete with the blue-laser Blu-ray Disc and HD DVD formats and had an initial capacity of up to 30GB per side.At a physical level, VMD is identical to DVD, but with the possibility of using more layers.