noun
disk space
Computing term for the amount of storage available on a disk or drive.
ハードディスクのディスクスペースが足りません。
There is not enough disk space on the hard disk.
Variant with interpunct; less common in running text but seen in technical contexts.
ストレージ is a broader term for storage in general, while ディスクスペース specifically refers to the capacity of a disk.
Loanword from English 'disk space'.