What is Hot (in computer networking)?
An adjective referring to actions that can be performed on systems or hardware devices while the power for the device is still turned on or while the device still has a live network connection or telecommunications link. “Hot” technologies are used in:
- Fault tolerant disk drive systems such as RAID systems
- Redundant power supply systems
- Modular Ethernet switches and routers
- Redundant high-speed data communication links
Examples of disk storage systems that use “hot” technologies include the following:
Hot-rebuild system: A drive subsystem that can automatically rebuild its original drive configuration after drive failure
Hot-spare system: A drive subsystem that has additional unused drives that can be called into action when drive failure occurs
Hot-swap system: A drive subsystem in which drives are mounted on trays and can be removed and replaced without shutting down the system
When you buy a hardware RAID unit, be sure that it has hot-rebuild, hot-spare, and hot-swap capabilities.