disk overhead

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Definitions from WordNet

Noun disk overhead has 1 sense

disk overhead, overhead - (computer science) the disk space required for non-data information (used for location and timing)
--₁ is a kind of disk space, disc space

Definitions from the Web

Disk Overhead

Noun:

The extra space required to store information on a disk that is not directly related to the user's data.

Example: The operating system and file system metadata are considered disk overhead.

Sense:

The time and resources consumed by activities such as seeking, rotating, and accessing data on a disk.

Example: Disk overhead greatly affects the performance of the computer system.

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