hot spare

noun

A spare device, component, or other piece of equipment which is kept powered up although not being actively used, allowing it to be immediately brought online as a replacement should a piece of equipment fail while in active use.

“In addition to the six hard drives making up the primary RAID array, the server has three hot spares ready to automatically take over for any failed drives in the array.”

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Meanings

nounhot spare (plural hot spares)

plural hot spares

  1. A spare device, component, or other piece of equipment which is kept powered up although not being actively used, allowing it to be immediately brought online as a replacement should a piece of equipment fail while in active use.

    In addition to the six hard drives making up the primary RAID array, the server has three hot spares ready to automatically take over for any failed drives in the array.

Cite this entry
APA

hot spare. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/hot%20spare

MLA

“hot spare.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/hot%20spare. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “hot spare,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/hot%20spare.

Source: hot spare on Wiktionary, CC BY-SA 4.0.