allocation unit

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Definitions from WordNet

Noun allocation unit has 1 sense

allocation unit - a group of sectors on a magnetic disk that can be reserved for the use of a particular file
--₁ is a kind of computer memory unit
--₁ has part: sector

Definitions from the Web

Allocation Unit

Part of Speech: Noun

Sense: 1. A specific amount of space on a storage device, typically a disk drive, that is used as a single unit for allocating and organizing data.

Usage: The allocation unit size determines the smallest amount of space that can be allocated to a file or directory on a disk.

Sample Sentence: The hard disk is formatted with a 4 KB allocation unit size to optimize storage efficiency.