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WordNet
disk space

n. (computer science) the space available on a magnetic disk [syn: disc space]

Wikipedia
Disk space

The term "disk space" is an amount of computer storage space on random-access memory devices, such as on a hard drive, floppy or USB flash drive. Disk space units are commonly measured in large numbers of bytes, such as kilobytes, megabytes, and gigabytes, with each unit 1024 times larger than the previous unit. The term originated in the 1950s, for the storage area on a hard disk drive, which internally had disk-shaped platters to rotate quickly. As storage devices have been created in other shapes, the term "disk space" has still been used to refer to areas of permanent storage on various storage devices. The total disk space can span multiple devices, such as areas on an array of disk drives.

"NT Server and Disk Subsystem Performance",
Microsoft.com, 2010, webpage:
MS2.

The broader term "storage space" is so widely used that it can be mistaken for property storage, as with items stored in a closet or storage bin. Hence, the term "disk space" has remained in use, even when the storage devices are no longer shaped like disks. When storage of data is not permanent, then the common term " memory space" is often used instead.

Usage examples of "disk space".

If the disk space for the cache is too full to hold new data, Proxy Server removes older objects from the cache using a formula based on age, popularity, and size.

One was a big top-of-the-line 486 with enough hard-disk space to store the complete denials of Richard M.

And if XP suits you just fine, you can regain disk space by deleting the uninstall data.

But again, most people would not bother to cooperate and some might see it as an invasion of privacy and of their disk space.

Collet knew these recording systems were generally placed in offices, were voiceactivated to save hard disk space, and recorded snippets of conversation during the day, transmitting compressed audio files at night to avoid detection.

Collet knew these recording systems were generally placed in offices, were voice-activated to save hard disk space, and recorded snippets of conversation during the day, transmitting compressed audio files at night to avoid detection.