What is hot swap? - Definition from WhatIs.com
Part of the Hardware glossary:

A hot swap is the replacement of a hard drive, CD-ROM drive, power supply, or other device with a similar device while the computer system using it remains in operation. The replacement can be because of a device failure or, for storage devices, to substitute other data.

Hot swapping works by providing a rack or enclosure for the device that provides an appearance to the computer's bus or I/O controller that the device is still there while it's being removed and replaced with another device. A hot swap arrangement is sometimes provided where multiple devices are shared on a local area network. Hot swap arrangements are sold for both SCSI and IDE hard drives. Hot swap versions of a redundant array of independent devices ( RAID ) are also available.

This was last updated in April 2005
Contributor(s): Alberto Accossato
Posted by: Margaret Rouse

Related Terms


  • laser

    - A laser is a coherent and focused beam of photons; coherent, in this context, means that it is all one wavelength, unlike ordinary light which showers on us in many wavelengths. The acronym laser s... (WhatIs.com)

  • hardware virtualization

    - Hardware virtualization is the abstraction of computing resources from the software that uses those resources. Today, hardware virtualization is often called server virtualization or, simply, virtu... (SearchVMware.com)

  • robotics

    - Robotics is a branch of engineering that involves the conception, design, manufacture, and operation of robots. (WhatIs.com)


  • Hardware

    - Terms related to computer hardware, including definitions about cables, connectors and power supply units and words and phrases about computing peripheral devices including the keyboard, mouse, au...

  • Internet applications

    - This WhatIs.com glossary contains terms related to Internet applications, including definitions about Software as a Service (SaaS) delivery models and words and phrases about web sites, e-commerce ...

Ask a Question. Find an Answer.Powered by ITKnowledgeExchange.com

Ask An IT Question

Get answers from your peers on your most technical challenges

Ask Question

Tech TalkComment



    Contribute to the conversation

    All fields are required. Comments will appear at the bottom of the article.