The portion of a single unit of storage accessible to a single read/write mechanism; for example, a drum, a disk pack, or part of a disk storage module.
The actual number of physical pieces in a multipart item: 6 v. (6 physical pieces); 2 v. in 1 (1 physical piece); 3 v. in 5 (5 physical pieces, e.g., v. 1, v. 2a, v. 2b; v. 3a, v. 3b). - see also Bibliographic volume(s), Volume.
The amount of space (in ml or cc) between the probe tip and wherever the air cannot get any farther (usually the tympanic membrane). Measured by applying +200 daPa.