disk overhead

English Thesaurus

1. (computer science) the disk space required for information that is not data but is used for location and timing (noun.location)

hypernym	:	disc space, disk space,
definition	:	(computer science) the space available on a magnetic disk (noun.location)

domain category	:	computer science, computing,
definition	:	the branch of engineering science that studies (with the aid of computers) computable processes and structures (noun.cognition)