cylinder
A single track location on all the platters making up a hard disk. For example, if a hard disk has four platters, each with 600 tracks, then there will be 600 cylinders, and each cylinder will consist of 8 tracks (assuming that each platter has tracks on both sides).
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- cylinder zero
Cylinder zero refers to the outermost cylinder in a hard disk that can be used for data storage.
- cytizenship
A slang term used to describe the feeling of belonging in cyberspace. For example, this could be owning real estate in cyberspace, such as a domain name. It is also used to describe interactions of people in cyberspace through blogs, chat rooms, instant messaging, discussion forums and other places where people can communicate online.
- D1
A resolution standard for TV and DVD-Video. In the NTSC system, Full D1 represents 720×480 pixels. The specifications for D1 TV and DVD-Video are as follows: TV PAL: 704×576 TV NTSC: 704×480 DVD-Video PAL: 720×576 (MPEG2) DVD-Video NTSC: 720×480 (MPEG2)
- D2D
Short for disk-to-disk, a type of data storage backup in which the data is copied from a disk-typically a hard disk-to another disk-such as another hard disk or other disk storage medium. In a D2D system, the disk that the data is being copied from typically is referred to as the primary disk and the […]
- D2D2T
Short for disk-to-disk-to-tape, D2D2T is an archiving device where data is first backed up on a disk system, but then is spooled to a tape or an optical storage system. The D2D2T device can help eliminate data loss issues companies experience with tape drive or tape failure. Using a D2D2T system of backup keeps a […]